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->''"...and he shall appear."''
-->-- '''Traditional proverb, origin unknown'''

You know how when you're in a crowd, you can tell whenever someone says your name? Some people (usually villains) can do that anywhere.

{{Older than Feudalism}}, the core trope is that [[BeCarefulWhatYouSay saying the name of the person]] summons him. Rarely is he [[InconvenientSummons summoned surprised and vulnerable]]; be assured that saying the name of this guy is a bad thing. Though probably just for you; he'll usually disappear afterward. [[note]] The question of why everyone in the world often knows this name, despite the taboo against it, is rarely addressed.[[/note]]

This makes talking about the villain problematic, as he has to be referred to as "The Enemy" or [[Franchise/HarryPotter "He Who Must Not Be Named" or " You Know Who"]], or just by a nickname, as with {{Satan}}, who may be called "Old Nick" or "Mister Scratch" (or LouisCypher). Sometimes these nicknames are conspicuously positive, just in case they're listening anyway, as with TheFairFolk, because you do ''not'' want to face down a pissed-off faerie. If referring to him by any name summons him, then you're screwed.

If attempting to talk to someone not in the know, this can easily lead to PoorCommunicationKills. There also remains the possibility of someone slipping up (especially when surprised or caught off-guard), or someone not in the know saying it. If you have another enemy you want to deal with, perhaps you can trick him into saying the name.

Another variation is that the villain's name must be said multiple times to summon him. In these cases, saying the name once is safe, so you probably don't need to worry about summoning him accidentally, or being tricked into doing so (unless you have no idea what's going on and just come across a piece of paper saying "[[SchmuckBait Say Hastur 3 times]].") ([[LiteralMinded Okay. "Hastur three times."]]) Instead, the villain is essentially SealedEvilInACan, and he'll be summoned either by someone who has no idea what's going on, or by someone who got his [[DeathByGenreSavviness tropes mixed up]] and thinks he'll be able to control the villain this way (perhaps through IKnowYourTrueName)), or [[DealWithTheDevil bargain with him]]. [[EvilIsNotAToy Expect this guy to die horribly.]] Also expect this villain not to disappear.

Compare AndHereHeComesNow.

If saying the villain's name doesn't necessarily summon him, but may simply cause something bad, that's TheScottishTrope.

If knowing someone's true name instead gives ''you'' power over ''him'', that's IKnowYourTrueName. If summoning him is a good thing, see CallOnMe. See also InadvertentEntranceCue. When this is done for humor rather than being a supernatural ability, it's RightBehindMe. Related to the SneezeCut. When this is invoked for a murder, a TroubleMagnetGambit is very likely the method used.


[[folder:{{Anime}} and {{Manga}}]]
* The Rail Tracer in ''LightNovel/{{Baccano}}!'' is something of a [[spoiler:''triple'']] subversion. At first, it's pretty obvious that it's a relatively harmless UrbanLegend delivered by two {{Cloudcuckoolander}}s and a chirpy train conductor that had the misfortune of coinciding with a train hijack. Then episode 6 rolls along and shows the aforementioned hijackers getting picked off by this... ''[[UltimateEvil thing]]'', proving that it just might be RealAfterAll. And then comes the WhamEpisode (let's just say that [[spoiler:it's a ''really'' bad idea to give the aforementioned chirpy train conductor/part-time PsychoForHire a reason for a RoaringRampageOfRevenge]])...
* A downplayed version serves as a RunningGag on ''VideoGame/DinosaurKing'': Ursula always knows when someone calls her an "old lady" no matter where they are in the world and immediately, and loudly, takes exception. She won't know ''where'' you are, much less be teleported there, but she will be pretty P.O.'ed when she meets up with you. This was once used to determine if the [[TerribleTrio Alpha Gang]] was in the area.

[[folder:Comic Books]]
* ''ComicBook/TheSandman''
** Characters refer to the Furies as "The Kindly Ones", as the ancient Greeks did; in this case, it's also to avoid attracting their attention.
** There is one instance of summoning the title character by saying his preferred name (Morpheus). The character Rose Walker is given a piece of paper by her protector, Gilbert, and told that she must read the word aloud if she finds herself in grave danger; she reads it when another character attempts to rape and murder her, causing Dream to appear in the room and come to her rescue. It's not made clear why this works, however; it may be [[spoiler:because Gilbert is actually a resident of Dream's kingdom, who has wandered off to do his own thing in the waking world, and is utilizing his own connection to Dream on her behalf. It is equally possible that it worked because Rose herself is the granddaughter of Dream's younger sibling Desire, and thus a blood relative of the Endless.]]
** Glob warns Brute not to say the name "Morpheus", because that could give him immediate entry to their sanctuary. Otherwise, Morpheus needs to take the long way around. Again, we have dream creatures involved, so it is hard to say what would happen if a mortal said it under normal circumstances.
** In the story "Ramadan", the Kalif of Bagdhad gets Dream's attention by addressing him by name and then threatening to release a horde of demons if he doesn't show. It seems that he knows where anyone is talking about him but doesn't have to take an interest, which suggests that Gilbert, [[spoiler:as one of the Major Arcana, the greatest dreams,]] knew a name for Dream most mortals don't and that made him take an interest.
** In the spinoff series ''Lucifer'', the eponymous protagonist threatens the queen of the Japanese afterlife [[spoiler:who has been using the souls of living dreamers to punish the ignoble dead, which is apparently seen as "poaching" with Dream as the gamekeeper]] with calling on the Dream King by merely saying his name. Since we know Lucifer doesn't lie but [[spoiler:Morpheus died, and Daniel is now King of the Dreaming]], we know that it's probably true, but not how it works, since Dream claims to no longer be [[spoiler:Daniel Hall]].
* In ''ComicBook/YoungAvengers'', Kang the Conqueror references this trope, and sort of uses it.
* In Brazilian comic ''ComicBook/MonicasGang'', two characters have it: [[GrimReaper Lady]] [[DontFearTheReaper McDeath]] appears whenever someone says "death" or something related to the verb "die"; and whenever something absurd occurs and someone asks "who would be nutty enough..." Nutty Ned appears.
* In ''ComicBook/{{Zot}}'' the [[PsychoForHire assassin-for-hire]] 9-Jack-9 can be summoned by typing his name (actually spelled [=J9AC9K=]) into any computer terminal. Every single reader has tried it at least once... or considered it and then [[NightmareFuel chickened out]].
* In an issue of ''ComicBook/{{Wolverine}}'', it was revealed that perennial ComicBook/{{X-Men}} villain Spiral is aware (or alerted) whenever anyone anywhere mentions her. She used this to track Wolverine and Mystique, the latter of whom could not spit out the warning in time.
* AxCrazy {{Superman}} {{Expy}} [[ComicBook/{{Irredeemable}} The Plutonian]] achieves this with a combination of superhuman [[SuperSenses hearing]] and [[SuperSpeed speed]].
-->'''Plutonian''': They can't call me a "monster" in earshot [[IResembleThatRemark and not expect retribution.]]
* This is one of the reasons the demons and devils of the {{Marvel}} verse will not sit on Satan's throne. They all covet it but they fear the wrath of their peers and worse, the possibility that stealing Satan's chair might convince him to return.
* Lampooned in ''NewspaperComic/TheFarSide'' in one cartoon, where Satan walks into a room in Hell where a bunch of guys are sitting, and one of them mutters to another, "Speak of the devil..."
* A rather extreme example is the Disir, a undead army that has menaced [[ComicBook/TheMightyThor Thor]]. When an Asgardian named Hakon, thinking them to be a myth, mentions their name he is ''instantly'' torn to pieces by invisible blades.

[[folder:Fan Works]]
* In the Pokemon fanfic ''FanFic/NaturalLiberated'', the characters can't say N's name in any form save pronouns because they do not want to invoke this trope.
* In ''FanFic/ChildrenOfAnElderGod'', a fanfic that replaces the Angels of ''Anime/NeonGenesisEvangelion'' with Lovecraftian horrors, the [=EVAs=], and Children, acquire the properties of the Elder Gods they kill. Misato uses this to escape kidnappers by repeating Rei's name over and over; as Rei helped kill the Elder God mentioned below in Literature, this allows Rei to possess one of the kidnappers.

* ''Film/{{Beetlejuice}}'' is summoned by saying his name [[RuleOfThree 3 times]].
** He's also sent back whence he came by saying his name three times.
** The full rhymes (from [[WesternAnimation/{{Beetlejuice}} the cartoon]], at least), though rarely used, go:
---> ''Even though I should be wary''
---> ''Still I conjure something scary''
---> ''Ghostly hauntings I turn loose,''
---> ''Beetlejuice, Beetlejuice, Beetlejuice!''
:::for bringing him into our world, and:
---> ''Knowing that I should be wary''
---> ''Still I venture someplace scary''
---> ''Ghostly hauntings now turn loose''
---> ''Beetlejuice, Beetlejuice, Beetlejuice!''
:::when Lydia wants to enter the Neitherworld.:
** ''Series/{{Community}}'' used this for a [[http://youtu.be/19FMU3M7Jtk stealth gag]] that [[BrickJoke ran over the course of three years.]] Watch behind Annie at the end of the clip.
* The ''Film/{{Candyman}}'' horror films: A tortured murderous spirit is summoned by saying "Candyman" five times in front of a mirror. This hearkens back to the urban legend of [[http://www.snopes.com/horrors/ghosts/bloodymary.asp Bloody Mary]].
* In ''Film/FreddyVsJason'', the adults of Springwood have systematically suppressed all knowledge of Freddy to deny him the power he gains from his potential victims' fear, so he ''can't'' return. The sheriff states outright that they don't say his name; however, this defense mechanism breaks down when Jason's rampage is misinterpreted and stories of Freddy resume circulating.

* In ''The Literature/{{Belgariad}}'', saying the name of Zedar allows him to listen in on your conversation. The protagonists eventually get around this by getting lots of storytellers to retell the tales of Zedar, so he won't notice them amidst all the noise.
* "Hastur" was the name of a benign god in a Creator/AmbroseBierce short story. In ''Literature/TheKingInYellow'', Robert W. Chambers adopted "Hastur" as a mysterious name, most likely a location, with only vague connections to the titular King. Creator/HPLovecraft namedropped Hastur and the Yellow Sign (from Chambers's work) as nebulously connected in ''The Whisperer in Darkness''. When Creator/AugustDerleth absorbed Hastur into the greater Franchise/CthulhuMythos, he started using it as the actual name of The King in Yellow, and [[AdaptationDecay re-appropriated]] [[IHaveManyNames non-synonymous titles]] such as "Him Who Must Not Be Named," (likely another euphemistic name for Azathoth) and "The High Priest Not To Be Described" (a minion of Nyarlathotep who might actually be Nyarlathotep) as sobriquets. This spawned the idea in the ExpandedUniverse that referring to him in by name was a very bad idea.
** The specific origin of the idea was in the ''TabletopGame/DungeonsAndDragons'' supplement ''Deities And Demigods,'' where saying "Hastur" (even once) had a 25% chance of summoning a flock of byakhees. If you defeated the byakhees, there was another 25% chance Hastur himself would appear.
** Not a bad thing but in fact quite good: In ''VideoGame/{{Persona 2}}'', saying "Hasturcomeforth" instead of your birth month to a fortune-telling girl would freak her out immensely and let you eventually summon him. (Hastur just loves hearing his name, basically.)
** In the WebComic ''Webcomic/UserFriendly'', Kuan is singing the Badger Song and Sid, annoyed, [[spoiler:gives him a Lovecraft version to sing, substituting "Hastur" for "Badger".]] It looks like [[spoiler:Kuan was KilledOffForReal]] as a result.
** Someone has coined the term "[[{{Neologism}} hasturbating]]" to refer to the process of invoking this meme.
* In the ''Literature/IncarnationsOfImmortality'' series, mentioning Satan by name will draw his attention. Lachesis and Chronos both mention this to the new incarnation of Death, when Death is investigating a suspiciously premature demise.
* Author Ramsey Campbell created a god for the ''Franchise/CthulhuMythos'' named Y'[[spoiler:Golonac [[note]]You fool! You've doomed us all![[/note]] ]], who could possess a host if they merely read his name. Not even out loud; he could possess a person if they sight-read his name on a printed page. Seeing as he's a god that represents ''every'' deed that could be viewed as defiling by individuals both sane and insane across the universe, this is not a pleasant fate. The accepted version is that reading his name is fine unless you are reading his name from one of the 7 tomes of "The Revelations of Glaaki" which will cause him to appear and either eat or mind rape or enslave you.
* In ''Literature/TheWheelOfTime'' series, saying The Dark One's true name [[spoiler:Shaitan]] supposedly draws his attention, and certainly gives you a nasty fit of bad luck. He's the dark god, you know. So there exist many alternate names for him too - like "father of lies".
* Used in ''Literature/JonathanStrangeAndMrNorrell'' with the Raven King, a [[ChangelingFantasy human raised in faerie]] who is the bringer of magic to England, and who is considered the true ruler of those living OopNorth who often make oaths by him. One Northerner, Childermass, declares himself loyal to the Raven King despite his absence, and later is shocked when he meets him and it's clear that The Raven King heard the oath [[spoiler: and is at least mildly amused that Childermass has no idea who he is]]
* ''Literature/HarryPotter'' series
** Voldemort is ''literally'' called He-Who-Must-Not-Be-Named by those who are afraid of saying (or printing) his name, though those using less formal diction call him You-Know-Who. His followers simply call him The Dark Lord. In the earlier books this is portrayed merely as people being monumentally afraid of Voldemort (and a sign of reverence, in the case of his followers). In the [[Literature/HarryPotterAndTheDeathlyHallows last book]] [[spoiler:Voldemort uses this to his advantage by placing a "Taboo" spell upon his name which causes the speaking of his name to break any protective charms on the area and reveal the location of the speaker to him. Seeing as the only people with the nerve to speak his name are Harry's group and (probably) The Order Of The Phoenix, this is quite clever]].
** In a more benign case, house elves automatically Apparate to the location of their owner when their name is called, regardless of any curses or protective magic that should prevent them.
* In the ''YoungWizards'' series, speaking any of the Lone Power's nicknames has the danger of drawing Its attention. Even ''thinking'' its true name is ''guaranteed'' to get Its attention unless something is keeping It distracted.
* ''Literature/{{Discworld}}'' series
** In the book ''Discworld/LordsAndLadies'', it is mentioned that mentioning the Elves by name can draw their attention and even help them cross over from Fairyland, especially around certain times of year when CropCircles appear. For this reason, the witches of Lancre refer to them by various pseudonyms (such as the Gentry, or the Lords and Ladies), and only feel (barely) comfortable saying their name aloud when in the presence of lots of iron. Although if you're close enough to a portal, even these pseudonyms will draw them. (This is based on old folk beliefs; there's a reason the trope's called TheFairFolk.)
** Another Literature/{{Discworld}} example is [[TheIgor Igor]] (any Igor). When the master calls him, Igor will appear directly behind to answer. Makes no difference if Igor was in the basement or on the roof at the time, somehow he will also be out of sight behind his master when the master calls. Just part of the Igor service package.
** Yet another Literature/{{Discworld}} example, especially in the early books such as ''Discworld/TheColourOfMagic'', was never mentioning the true name of The Lady, the Goddess Who Must Not Be Named, which is [[spoiler:Lady Luck]]. An inversion, since she's the only goddess who only comes when ''not'' called and flees when mentioned. The Discworld Companion adds that the Gamblers' Guild once tried worshiping her, and the result was that the building exploded. Not so surprising, since it is later established that Gamblers' Guild is always right across the street from the Alchemists' Guild...
** Wizards are forbidden from saying the number eight because it draws the attention of the EldritchAbomination Bel-Shamharoth, the Sender of Eight.
* ''Literature/TheLordOfTheRings''
** This trope is used often in the books: Gandalf is unwilling to pronounce the ring's verse in the dark, especially in the black speech. There is generally a reluctance from all the characters to use words or names associated with evil things when it is dark. Since the Ring's verse is essentially an evil spell, it's quite understandable why Gandalf doesn't want to speak it in uncontrolled circumstances.
** And in ''Literature/TheSilmarillion'', Sauron's [[PredecessorVillain former master]] is only ever referred to as "Morgoth" ("Dark Enemy") after this name is given to him by a scornful [[HeWhoFightsMonsters Feanor]]; the "Valaquenta", which describes the names and powers of every significant deity in Arda, explicitly states that his true name, Melkor, "is not spoken upon Earth".
* ''Literature/TheChroniclesOfThomasCovenant''
** The Ranyhyn, the wild, free and intelligent horses. They have special magic that days or weeks before you call them, they know it and head for where you will be so that as soon as you whistle for them, they are there.
** And in the ''Second Chronicles'' we meet the Sandgorgons, who instantly know when their names are mentioned, even a great distance away, and will run at incredible speeds to find the person who did it [[spoiler: and kill them.]]
** And in the Last Chronicles, speaking She Who Must Not Be Named's true name could ''destroy the universe'' [[spoiler: since she's Diassomer Mininderain, the Lover, a deity on par with the Creator and Lord Foul, and if she ever remembers her true name and stature she'd be able to escape from being imprisoned in reality, with reality itself an unfortunate casualty]].
* A rather literal variant in the ''Literature/ThursdayNext'' series, [[ReligiousAndMythologicalThemeNaming Acheron Hades]] can hear his name if it's spoken within a hundred-mile radius.
* In the Creator/DavidDrake fantasy novel ''The Sea Hag'', TheHero is able to defeat the villain by tricking him into naming Serdic, his [[OldMaster old (dead) master]]...who then promptly appears and drags the villain away to a NightmareFuel fate, [[ChekhovsGun since he had promised the hero earlier this would happen the next time he was named]].
* In ''Snakecharm'', the second of Amelia Atwater-Rhodes' ''Literature/KieshaRa'' series, an unfortunate falcon, masquerading as a serpent, asks Zane if the falcons' ambassador, Syfka, is in town. Syfka pops up almost immediately, telling the rogue falcon "You were foolish enough to use my name, not once, but ''twice.''" The "...And then you're in deep trouble" aspect is subverted, as Syfka gets into a heated argument with Zane, and when she turns around a moment later, everyone realizes that the man who said his name had run away during the argument.
* In ''Literature/RomanceOfTheThreeKingdoms'', [[MagnificentBastard Cao Cao]] had a tendency to show up whenever his name was being mentioned - so the saying goes, "Speak of Cao Cao, and Cao Cao is at the gates." Ironically, at one point, this was happening to the man himself - everytime he [[TemptingFate tempted fate]] by mentioning some character on the opposing side, that man would shortly show up.
* In Creator/JohnCWright's ''Literature/ChroniclesOfChaos'', Echinda can detect anyone saying her name; the children resort to refering to "the fishmonger."
* Similar to the ''[[ComicBook/TheSandman Sandman]]'' example above in the ''Literature/PercyJacksonAndTheOlympians'' series by Rick Riodan, the use names of various mythological figures or places causes bad things like thunder and darkening of the skies to happen, so the characters tend to avoid using them. It's stated that this is because it gets their attention, and the lightning is only if they're upset with you. Unless you're Dionysus, who responds to Zeus's thunder with a bored "Blah, blah, blah."
* Literature/TheDresdenFiles:
** Wizards, despite being human, can invoke this. If a person knows a wizard's True Name, they can try to gain control over the person. However, if the Wizard has a stronger will and power, they can reverse the binding and bind the would-be summoner.
** In ''Storm Front'' an evil Wizard summons his demon slave by screaming its Name. [[spoiler:Harry, having perfectly heard the Name, then uses his own magic to free the demon from its enslavement without binding it to his own will]].
** Mentioning the [[spoiler:skinwalker/naagloshii]] in ''Turn Coat'' is a very bad idea, since it grows stronger with fear and infamy. So Harry [[TheNicknamer renames it]] "Shagnasty," which lacks the same intimidation factor.
** In ''Changes''
*** It is revealed the Winter Knight, and presumably Summer Knight, have this direct power the Queens of their respective courts. The Winter Knight is deep inside enemy territory protected only by the Erlking's respect for SacredHospitality, and he refers to Queen Mab by her name. The Erlking notes if the Knight speaks Mab's name a third time in their conversation, it will cause her to be summoned to his domain. The Knight then only refers to her as "my queen."
*** Later, when speaking of the Erlking, Harry's Fairy Godmother, the Leanansidhe calls the Erlking, "The Hunter" to not summon him.
** Similar to the knights, Mab is mindful to not speak the Names of any being of Power, particularly Fallen Angels and Archangels. She only says their titles. ArchangelMichael is "Prince of the Host." ArchangelRaphael is "The Demon Binder." ArchangelGabriel is "The Trumpeter." ArchangelUriel is "The Watchman."
** Mab, Titania, and their mothers, Mother Winter and Mother Summer[[note:These two, it should be noted, are comparable to Uriel in power[[/note]], each are hesitant to speak of [[spoiler:Nemesis for fear it might come for them and infect them]]. They simply call it the Adversary.
* In the ''Literature/EvieScelan'' series, Evie threatens people who seem like they are about to call the Bright Brotherhood by their proper name, [[spoiler:Fiana]]. For someone who doesn't mind handing out her true name, she seems surprisingly worried about this.
* In ''Jack of Shadows'', by RogerZelazny, Jack's powers include the ability to hear any person who speaks his name in shadow, and to continue listening in until they move out of it.
* Creator/JackChalker's ''The Changewinds'' begins with the female protagonists learning that they are being threatened by an evil wizard. A mercenary to whom was entrusted the girls' safety decides that the villain is likely to pay better and attempts to attract his attention by saying his name now and then. The girls, discovering this, try to call on the wizard who brought them to this world by saying his name over and over. Of course, with a name like "Boolean", the girls just wound up giggling after a while. It should be noted that neither wizard was summoned, no matter how much their names were dropped.
* In Creator/RobertEHoward's Literature/ConanTheBarbarian novel ''Literature/TheHourOfTheDragon'', Zenobia fears it, even though it's a man being spoken of.
-->''"Do not speak of him!" she whispered. "Demons are often summoned by the sound of their names.''
* The Bloody Mary version is weaponized in Seanan [=McGuire=]'s short story "[[http://www.apexbookcompany.com/2010/04/short-story-dying-with-her-cheer-pants-on-by-seanan-mcguire/ Dying With Her Cheer Pants On]]".
* Nearly used in the SolomonKane story "The Blue Flame of Vengeance", except that Solomon shows up right as the Fishhawk is about to say his name.
* In ''Literature/TheKingkillerChronicle'', the Chandrian can tell when and where their name is spoken.
* In Creator/FredSaberhagen's ''Literature/{{Empire of the East}}'', the arch-wizard Wood (itself an alias) is too afraid to say the demon-prince [[BigBad Orcus']] name, or even think it. He still proposes to [[SealedEvilInACan release him]], though.
* In The ''Literature/GriffinsDaughter Trilogy'', the Nameless One's true name had been stricken from elven records and lore, to keep others from trying to invoke IKnowYourTrueName and claim the Nameless One's power, either becoming as big a threat as The Nameless One or inadvertently [[SealedEvilInACan unleashing him on the world]].
* ''From the Notebooks of Dr. Brain'' by Minister Faust, heroes are paranoid about mentioning the name of a ridiculously powerful psychic supervillain because saying his name aloud allows him to instantly teleport to your location. This is despite the fact that he's been locked up and contained for over two decades.
* In ''[[Literature/TheRiftwarCycle Rage of a Demon King]]'', it is revealed that saying the true name of The Unnamed is not necessary to come under his power; merely thinking or even ''knowing'' it is sufficient.
* In ''Literature/{{Pact}}'', speaking the name of someone generates a connection between you and them, one which they can notice. Speaking it repeatedly causes an effect that's described as an itch that can't be scratched, which usually will cause them to seek you out to make it stop. This principle applies to everything from bog-standard practitioners, to [[AnthropomorphicPersonification the Lord of Toronto]], to [[TheLegionsOfHell a duke of the first demonic choir]].
* ''Literature/JourneyToChaos'': No one wants to refer to Tasio by his name, because that would attract his attention. The speaker and everyone around him could be subjected to anything from a petty prank to a terrifying catastrophe. This is why Tasio has so many nicknames, with "The Trickster" being most common amoung them. [[Literature/AMagesPower In the first book]], Eric is yelled at several times for violating this taboo, [[Literature/LoomingShadow and in the second]], Emily is BoundAndGagged for deliberately doing so.
* [[GodOfEvil Allasakar]] is the BigBad of ''The Sacred Hunt'', ''Literature/TheSunSword'' and ''The House War'', and ''nobody'' likes to say his name, regardless of origin or affiliation. In the North, he's known as the Lord of the Hells, in the south as the Lord of Night, and to his minions simply as "the Lord" without qualification; he's also referred to by the euphemism "the god we do not name". While the consequences of naming him aren't elaborated on in detail, the taboo is deeply ingrained enough that even saying "Allasakar" aloud is considered a sign of courage (or overconfidence).

[[folder:Live Action TV]]
* ''Series/MontyPythonsFlyingCircus'': The immortal sketch "[[InadvertentEntranceCue I didn't expect some kind of Spanish Inquisition!]]" "''NOBODY'' expects the Spanish Inquisition!"
** Which turns into a new joke in the final scene of the episode, where the Inquisition somehow knows that someone said the words, but they're across town, so they have to rush to catch a bus to get to the person in question and say their lines before the episode ends.
* ''Franchise/PowerRangers'': "Say my name and I appear. Why have you summoned Quagmire here?" Quagmire is an ''enemy'' of the villain.
* On ''Series/{{Bewitched}}'', calling Dr. Bombay required a simple rhyme: "Calling Dr. Bombay, emergency, come right away." He was sure to come (maybe not right that minute, but eventually), but was usually grouchy, having been called away from something else he was doing.
* In an early episode of ''Series/{{Supernatural}}'', the boys fight Bloody Mary. Needless to say, this trope comes into effect. [[spoiler: The boys finish her off by getting her to look into a mirror and letting her own reflection turn her powers on her and destroy her]].
* ''Series/GoodEats''; not a villain but a RunningGag:
--> '''Alton''': All right, which one of you at home said "Nutritional Anthropologist"?
--> '''Deb Duchon, Nutritional Anthropologist''': That guy, there... naugahyde chair, green pants.
--> '''Alton''': Yeah, well, (through megaphone) thanks a lot, Mr. Talks-to-his-television!
* Neil on ''TheYoungOnes'' once summoned the demon Futumsch to Neil's shared flat by saying his name, which was due to him wondering what Mike was talking about. Not that any of the guys ever noticed Futumsch was there, mind. (Futumsch complains about his name being an obstacle to being summoned.)
* In Brazilian sitcom ''Toma Lá, Dá Cá'', whenever the apartment manager's name is mentioned, she knocks at the door and comes in. At a certain point of the show, the GenreSavvy characters would try to stop whenever someone started saying her name.
* In ''Series/{{Scrubs}}'' mentioning "Johnny the tackling Alzheimer's patient" will result in JD being tackled by Johnny at least once that episode.
-->'''Johnny:''' Who am I?!
* The ''Series/TalesFromTheDarkside'' episode "Seasons of Belief" has a couple on Christmas Eve telling their kids the story of a monster who's so full of himself, if he hears anyone say his name, his ears will transform into wings and he'll hunt them down and squeeze the life from them, (often while singing a song about himself). Supposedly, the only way to get rid of him is to finish telling the story about him. [[spoiler: The parents stop to assure their kids that it's just a story and that there's nothing to be afraid of. The monster takes this moment to reach inside the house and crush the skulls of the parents, (though curiously leaves the children alone, despite them all having said his name). In the short story the episode was based on, the monster was implied to have killed everyone.]]
* WWF/E wrestler TheUndertaker does a very JustForFun/CandleJack-ish variation of this. Basically, if his name is brought up in an offensive way while he's around (or even if he isn't), a gong will sound, and the lights will go off. Then he will appear behind the offender and usually chokeslam or Tombstone Piledrive them to the mat. Sometimes, Taker's name doesn't even need to be spoken -- as heel manager Paul Heyman learned at the end of a Smackdown match, just telling someone that "[[TemptingFate there's not a man alive who's going to stand in my way]]" [[http://www.youtube.com/watch?v=-KfOIr1HGtc can be enough to bring the Deadman's wrath down on you]].
* In ''Series/RaisingHope'', the Dog-Head Man knows when people are talking about him. At least, according to Jimmy.
* In ''Series/{{Nikita}}'', [[TechnoWizard Birkhoff]] gets an alert whenever anybody online runs a search on his name.
* ''Series/TheMuppetShow'':
** Mentioning any term for explosions or bombs and [[MadBomber Crazy Harry]] will appear, detonation plunger in hand and BOOM! Kermit once had the misfortune of causing this ''three times in a row'' on the BenVereen episode.
** In one episode the [[ButtMonkey Newcaster]] reports that the temple of an ancient Egyptian crocodile god named Rezal-evad-gib (the name of which he actually said twice for emphasis) had been discovered, and that said god would "wreak a terrible vengeance" upon anyone entering the tomb or even saying his name aloud. Well, [[DeadlineNews you can probably guess what happened.]] He gets an excuse ''that'' time, but in the ''very next scene'', where Beauregard tries to warn [[SpecialGuest Lynda Carter]] that they've discovered a dangerous word, but can't remember the hard-to-pronounce name, the Newscaster runs in [[TooDumbToLive and says it]] ''[[TooDumbToLive again]]''.
* In the ''Series/{{Warehouse 13}}'' episode "13.1", Claudia and Fargo hide from attacking robots in an artifact crate, and the artifact starts to activate. Fargo starts to ask if the artifact is what he thinks it is. Claudia stops him, as things will get ugly if he says its name.
* ''Series/TwoAndAHalfMen'' Played for laughs in a RunningGag. Wherever Charlie may be, he knows his stalker, Rose, is always within earshot. So he just has to say her name and she'll say "Yeah?" usually from an unseen location.
* In Season 4 of ''Series/PersonOfInterest'', Harold Finch doesn't want to say the name Samaritan, for fear the all-seeing ArtificialIntelligence will [[BigBrotherIsWatchingYou pick up the word on some microphone]] and zero in on their position. Finch is being ProperlyParanoid as Samaritan was specifically designed to do this.
* ''Series/{{ArrestedDevelopment}}'' pulls this as something of a BrickJoke. The word ''Film/{{Beetlejuice}}'' is said three times in the show, and on the third utterance he walks through the background.
* Franchise/MarvelCinematicUniverse:
** ''Series/JessicaJones2015'': Kilgrave has commanded a college girl named Hope into shooting her parents in an elevator in Jessica's building. Trish tries to use her radio show to raise sympathy for Hope, but when Jeri is doubtful, Trish, who knows very well Kilgrave is real as well as what he did to Hope and Jessica, starts a tirade which devolves into bashing Kilgrave. Kilgrave immediately calls in, stating that if a person such as Trish described did indeed exist, it would be most unwise to anger them, accompanied by the shocked looks of Trish, Jessica and even Jeri. Not too much later, Kilgrave acts on his threat by sending a controlled Will Simpson to Trish's door.

* In the song "Black Fox" whose artist varies, some bored foxhunters mention that if the devil himself showed up, they'd "run him such a race." Out of nowhere appears a black fox with red eyes, which the exited hunters chase all over the countryside. Eventually, the fox swims a river, and upon reaching the other side, reveals itself to be Satan, who more or less exclaims "Surprise, *** !" The terrified hunters flee back to town.
* For some odd reason, in Lupe Fiasco's "The Cool", whenever The Game is mentioned, someone dies (unintentional. Maybe.). You don't even hear him say it in his own song due to this reason:
--> If you die, tell 'em that you played my game
--> I hope your bullet holes become mouths that say my name,
--> cuz I'm the-*GUNSHOT*

[[folder:Mythology & Religion]]
* {{Satan}} is the TropeNamer. Depending on how strict their adherence to the 3rd Commandment (reformed enumeration) is, some people refrain from saying God's name as well, though that's less out of fear of summoning Him (seeing as He's already omnipresent) and more because to do otherwise is seen as blasphemous.
* Various old folklore:
** Not only the Devil, but [[RomanceOfTheThreeKingdoms Cao Cao]] in Chinese folklore, wolves in France, and various predators in various places. An especially interesting case is {{bears|AreBadNews}}. "Bear" is itself a euphemism for the creature, a word (meaning "the brown one") used instead of their name to avoid drawing their attention. The substitution happened so long ago that we have little idea what the real name was. Based on reconstructed Indo-European, the old Germanic word for bear would be "''urþaz''" (or something similar, from Proto-Indo-European ''hrtkós''); given that the current word in English has cognates in the other Germanic languages (for instance, the German "Bär"), the change probably occurred at the proto-Germanic stage, and the ancestors of the original English speakers stopped using the old word.
** The latin expression "lupus in fabula" literally means "the wolf in the conversation" and is the exact equivalent of the English "speak of the devil". You should be careful when talking of the wolf, as it might appear.
** The Slavic term for a bear is ''medved'', meaning "one who knows where the honey is." Which itself has been known to get substituted with euphemisms like "furry one". It's in fact a ''double-decker'' euphemism, since the Slavs also were originally using the word very similar to "bear" (that survives as a stem in the Russian word ''berloga'' "bear's lair"), making further euphemisms like "furry one" or "mishka" (Russian for "Mikey", as in, little Michael) ''three-storied'' euphemisms. Finnish has roughly fifty different terms for a bear, the euphemisms ranging from "dew palm" to "the apple of the forest".
** This continues to this day. In Central America, [[{{Mayincatec}} Mayans]] will never refer to the [[PantheraAwesome jaguar]] by its name ("balam") for fear of invoking its presence. They refer to it as "chac mool", which means "red paw"
** This was so prevalent when it came to wolves in Sweden that the most common euphemism ("varg", meaning killer or strangler) became the ''proper'' name. The actual ''phrase'' 'Speak of the devil' has a counterpart that uses trolls ("When you speak about the trolls, they'll stand in the porch").
* The fairy Puck will appear if you say his name, in folklore and in Creator/WilliamShakespeare's works. Unlike in the Bard's play, encountering jolly old Robin Goodfellow in the older folklore tended to get you into far worse fates than growing some donkey ears.
* One old wives' tale is that of Bloody Mary, who supposedly appears and very violently murders anyone who says her name three times while looking in a mirror. Or seven times, and maybe you have to do it by candle light, or maybe you have to taunt her that you killed her baby. Myths are like that.
* [[EverybodyHatesHades Hades]] of [[Myth/ClassicalMythology Greek Mythology]] is a good example. The Greeks believed saying his name drew his attention, so they called him by all sorts of nicknames and titles, like "The Wealthy One" or "The Host of Many."

[[folder:Other Sites]]
* ''Wiki/SCPFoundation:''
** [[http://www.scp-wiki.net/scp-2056 SCP-2056 ("Tsiatko")]]. SCP-2056 is a humanoid creature. According to Native American elders speaking their name is dangerous, as it knows when someone is talking about it and hunts them down.
** [[http://www.scp-wiki.net/scp-2521 SCP-2521]] is some sort of HumanoidAbomination the Foundation cannot quite contain properly. It can go through walls, and practically teleport, but the ''real'' danger about it is that it apparently covets any sort of verbalized (as in said or written) information on itself, and will steal it away the moment it's made. It might be a document. It might be a recording. It might be ''the person who spoke it'', if they said it out loud. [[TheFourthWallWillNotProtectYou And it might just take this page at some point]].

[[folder:Professional Wrestling]]
* Mentioning Wrestling/{{Boogeyman}} in Ohio Valley Wrestling likely resulted in him showing up and {{squash| match}}ing you, especially if you mentioned him while in the ring.

[[folder:Tabletop Games]]
* The ''TabletopGame/CallOfCthulhu'' game and its various manifestations are where this trope really got going in geek culture - see the entry under '''Literature''' above for Hastur.
** In the ''Call of Cthulhu''-themed podcast "The Good Friends of Jackson Elias", the name Hastur is inevitably bleeped out when it occurs. (Swearing, on the other hand, is not.)
** In the supplement ''Terror Australis'', adventure "Old Fella That Bunyip". The investigators are forced to say the phrase "Eleanba Wunda" to drive Bunyip upstream. Unfortunately for them, it's the name of a spirit ''worse'' than Bunyip, which will appear if its name is chanted too often. The second time the investigators do so they feel a cold wind, and the third (and final) time Eleanba Wunda ''almost'' appears.
* Invoked by FanFic/OldManHenderson at the end of his game, when he called Hastur into a hockey stadium [[StuffBlowingUp rigged with enough explosives to make Michael Bay blush]], thereby [[DidYouJustPunchOutCthulhu permanently killing him.]]
* ''TabletopGame/DungeonsAndDragons''
** In early editions, saying the name of a demon could cause it to turn its attention to the speaker and attack him if possible, and speaking the name of a devil (which was inscribed on its talisman) would call forth that devil.
** In TabletopGame/ForgottenRealms saying the name of a Chosen of Mystra (such as Seven Sisters) outside of dead magic areas alerts them and allows to hear the next nine words uttered by the speaker. This was used a few times both for startling folk by quoting their previous statements and more important things -- e.g. in ''[[Literature/TheElminsterSeries Elminster's Daughter]]'' some Red Wizards with a hostage made Elminster swear he will not act against them, and then he began to mumble something repetitive. If you know who [[TheDreaded The Simbul]] is, the rest of this scene is [[ThereIsNoKillLikeOverkill as obvious as it is messy]].
** 3.5 has Truenaming, which at level 20 gives a feat that allows a character to do this with a use-name of their choice. Speaking the use-name, afterward, allows the character to know where you are, what the general situation is, and lets them decide whether or not to be teleported into the area. Depending on the character in question, this can either be an example of this trope, or CallOnMe. Or, in some cases, both at once.
** Also from ''TabletopGame/DungeonsAndDragons'': any good or neutral creature that speaks Pazuzu's name three times will catch his attention. He sometimes offers to aid such a creature if they're in trouble... but accepting a boon from a demon lord [[TheDarkSide is guaranteed to pull you into evil]].
** Also in the 3.X Deities and Demigods Handbook it states that Deities are generally aware if anyone says their name, anywhere or any of their common titles. This generally won't summon the deity to you but that does make it hard to mount an assault on the gods...This is why a few of TabletopGame/ForgottenRealms novels got "Psst! No names!" scenes from avatars and other canny characters.
** One [=DnD=] sourcebook (likely ''The Book of Vile Darkness'') relates the story of a particularly huge prick of a merchant who would take advantage of this rule by selling a parrot to rich-looking individuals. When they got out of town and onto a deserted stretch of road, their new pet would fly away and start shrieking the name of Orcus--a freaking [[EvilOverlord demon lord]]--who would appear and murder the poor saps. After Orcus had teleported back to the Abyss, the merchant would then gather up his dead victims' gear. That he would pull this trick repeatedly says something horrible about the merchant and a little pathetic about Orcus, who apparently has a lot of free time on his hands.
** Cerlic, the Ferryman of the Styx (known as Charon to most mortals) is a unique yugoloth and one of the safest ways to travel through the Lower Planes, and simply saying his name on the shores of the River Styx will summon him in at most, a half-hour. ''However'', he requires payment up front (which is astronomical) and anyone who summons him and refuses to pay is attacked; he's ''incredibly'' powerful, on par with a minor demon lord.
** Another example of this which was legitimate is the DemonLord Fraz-Urb'luu, who is notorious for using a unique talent to use the names of other Demon Lords to trick them into thinking they have been summoned. His usual strategy is to do this, and then teleport away right before the victim appears, assuring that the angry demon will take out his anger on whoever Fraz-Urb'luu had been fighting. (This strategy naturally has made Fraz-Urb'luu universally hated among other Demon Lords.)
** Although its been referenced in several other tropes, the legend of the Serpent's Coil still (sort of) counts. A 2nd edition myth that made it into 3.0 before being retconned out at the end of 3.5, the myth went that Asmodeus, the king of Hell, was actually a very advanced illusion or perhaps an avatar of some sort; his ''true'' shape was a [[EldritchAbomination miles-long monstrosity of utter, incomprehensible evil]]. When he was hurled from the celestial planes into Hell, this form crashed through the dimension's reality - creating the nine levels of Hell - and came to rest in a deep, spiraling crater at the very bottom of The Pit. In an aversion of this trope however, telling someone this story didn't summon Asmodeus: it simply caused the storyteller to die within 24 hours (by unspecified means). Which is about on par for drawing the attention of overwhelmingly powerful evil uberdeities.
** The TabletopGame/NentirVale has an interesting reversal. The god that Asmodeus rebelled against in this setting is known only as "He Who Was". This is because Asmodeus literally [[UnPerson erased all record and memory]] of the deity's name from history, fearing that if it was spoken just once, the slain god would regain his powers.
** ''TabletopGame/{{Planescape}}'':
*** There's a slightly odd variation where on some evil planes, divination spells alert the target and they soon come to find you. Now, bear in mind you usually need to know some name or other means to identify the target of a divination spell.
*** Also, revering the Lady of Pain will result in you either being Mazed or Flayed, depending on her whim. Because of this, even though nobody knows her actual name, they don't even like to use her ''title'', instead using respectful nicknames like "Her Bladed Serenity".
** The 1980 TabletopGame/DungeonsAndDragons ''Deities and Demigods Cyclopedia'' stated that naming Hastur aloud could result in his sending some Byakhee to kill you. If they failed, he might appear himself to finish the job. Tricking a player into doing so has long been a favorite means of [[RocksFallEveryoneDies ending a game that has gone sour]].
** The ''TabletopGame/{{Ravenloft}}'' fan-made PrestigeClass called the Folkloric Warlock gains the ability to do this at a high level.
* Creator/{{Kibo}}, mentioned below in the RealLife section, was used by ''TabletopGame/MageTheAscension''. In the digital web, he set up magic tracers so whenever anyone said his name, he would instantly be able to appear, as a real person, in front of them.
* The Antediluvians in ''TabletopGame/VampireTheMasquerade'' are like this, or at least their vampiric descendants are afraid that they might be. At various points, it comes up that the names we have for them aren't their real names, just pseudonyms that are used to refer to them without the possibility of drawing their attention via this trope. It also shows up in ''TabletopGame/DemonTheFallen''. Using a demon's Celestial Name automatically opens a remote channel of communication with them; use it unaware of that connection, and they'll be listening to everything you say...
* The [[OurElvesAreBetter Eldar]] of ''TabletopGame/{{Warhammer 40000}}'' are being hunted down by the evil [[EldritchAbomination Chaos God]] Slaanesh, and naturally, [[TheDreaded they are so shit scared of the menacing god that they won't even use that name]] to refer to [[AmbiguousGender hir]]. The Craftworld Eldar refer to Slaanesh as "The Great Enemy" and the Dark Eldar refer to Slaanesh as "She Who Thirsts". Only a few especially badass Eldar have the balls to refer to Slaanesh by hir actual name, such as [[VideoGame/DawnOfWar Ronahn]]. Solitaires, the most badass of the Eldar Harlequins, take it even further. When re-enacting the Fall of the Eldar, the Solitaires are the ones who play the role of Slaanesh. And while speaking hir name ''might'' draw the dark god's attention, anyone who isn't a Solitaire pretending to be Slaanesh ''will'' go insane. The Solitaires pay a high price for their dedication though: their souls are forfeit to Slaanesh and there is nothing they can do about it.
* ''TabletopGame/{{Shadowrun}}'' 3rd Edition supplement ''Magic in the Shadows''. If a free spirit's [[IKnowYourTrueName true name]] is spoken [[RuleOfThree three times in succession]], the spirit has to appear before the speaker.

* ''Theatre/DamnYankees'': "I'd sell my soul for one long ball hitter." Cue eerie music and [[LouisCypher Applegate]]'s entrance.

[[folder:Theme Parks]]
* In the former ''Theatre/GhostbustersSpooktacular'' show at [[Ride/UniversalStudios Universal Studios Florida]], Louis Tully specifically tells Walter Peck not to say Gozer's name, which he ignores and does multiple times, causing the villain to eventually appear.

[[folder:Video Games]]
* In the ''Franchise/DevilMayCry'' series, the ruler of the underworld and BigBad of the first game is named "Mundus". Oddly, he is almost never referred to by name in other products, either being referred to as "the Devil King" or "the Devil Emperor".
* Parodied (and used) in ''VideoGame/KingdomOfLoathing'': if you select 'Say "Guy Made Of Bees"' five times as a choice when you encounter a bathroom mirror, you will encounter the Guy Made Of Bees. And unless you have a certain in-game item and use it in the first round of combat, the Guy Made Of Bees will hit you with as much force as the Incredible Hulk's weight in bees.
* During a perfect PacifistRun in ''VideoGame/{{Iji}}'', [[GeneralRipper Elite Krotera]] will mention [[PunchClockVillain Vateilika]] and how he'll deal with her after you're dead. He really should have spent the time saying goodbye to Mr. [[{{BFG}} MPFB Devastator]], as his flight off this mortal coil just arrived.
* In ''VideoGame/UltimaV'', the Shadowlords could be summoned to your location by yelling their name (Eg, Yell Astaroth).
* A possible inversion of this trope (overlapping in aspects with IKnowYourTrueName) occurs in ''VideoGame/BreathOfFireIV''. Along with straight treatment of IKnowYourTrueName, General Yohm hunts down [[WoobieDestroyerOfWorlds Fou-lu]]--even at one point explicitly commenting that ''the mere act of uttering Fou-lu's '''name''' is sufficient to send ripples in the world that can lead someone sensitive to those ripples to find him''. (Yes, this is justified--Fou-lu is not only a GodEmperor but a rare case of a PhysicalGod that was explicitly summoned to be the KingInTheMountain of a dying empire.) A straighter version ALSO exists. In a part of the game, Fou-lu refrains from revealing his name to [[SacrificialLamb Mami]] explicitly to keep this from happening, and merely goes by his nickname "Ryong"--this eventually gets blown to hell when he tells her his story via a historical legend (and HAS to use his [[IKnowYourTrueName real name]] in it).
* In ''VideoGame/{{Runescape}}'', saying [[spoiler: Zaros]]'s name (how fun, the fact he ''exists'' is a spoiler) gives him power. He's weakened that much - in fact, most [=NPCs=] (and other Gods) refer to him as "The Nameless God".
* ''VideoGame/NeverwinterNights2'' inverts this initially, when an AffablyEvil devil willingly tells you [[IKnowYourTrueName his true name]] so you can banish him back to Hell. Later played straight when knowing his true name from your previous meeting with him lets you summon him for a DealWithTheDevil.
* In the ''VideoGame/{{Discworld}}'' adventure game, saying the word "monkey" will cause the Librarian to appear and punch you, because he is an ''ape'' and does ''not'' like the M-word. This is occasionally mentioned in the books, but the game turns it into a RunningGag instead.
* In ''VideoGame/{{Xenoblade}}'', after Shulk, Reyn, and Sharla make it out of the Ether Mine, Shulk remarks that they still haven't found the faced mechon who [[spoiler:attacked Colony 9 and killed Fiora]] earlier. Cue Metal Face floating up behind them and surprising them with a taunt.
--> '''Metal Face:''' Hope I'm not interrupting!
* In ''VideoGame/TheElderScrollsVSkyrim'', it's revealed that providing one knows the [[IKnowYourTrueName true name]] of a Dragon, if you invoke it via [[LanguageOfMagic the Thu'um]] it will hear you and may cause the Dragon to immediately fly to your location out of curiosity as it can be considered a challenge. It is not however guaranteed, as invoking the dragon's name gives you no power over it. The Greybeards summon the Dragonborn to High Hrothgar for training in a similar manner, calling forth the Dovahkiin so loudly the whole of Skyrim trembles. Notably, [[BatmanGambit it works on you]] the same way it does on dragons.
* ''[[VideoGame/DynastyWarriors Dynasty Warriors 8]]'' has a fair bit of fun with the Chinese equivalent of this trope (the "Speak of Cao Cao, and Cao Cao will come" idiom mentioned in "Real Life"); [=NPCs=] in the Wei faction Story Mode even explicitly invoke the trope noting that Cao Cao comes whenever he's spoken of--and promptly lampshade this by commenting "Cao Cao must have a ''really'' good information network!"
* The Lady of Pain from ''VideoGame/PlanescapeTorment''. Simply saying her name once doesn't attract her attention, but repeated mentions or worship (which she forbids) will. Many people simply call her "The Lady" to avoid summoning her by mistake. This is inherited from her tabletop game incarnation above.
* In ''VideoGame/BarrowHill: The Dark Path'', other characters who say Baibin's name aloud tend to be attacked by her soon afterward. The ones in-the-know about the local legends believe this trope applies, and are usually frightened and horror-struck when they realize they've said her name.

[[folder:Web Comics]]
* [[http://www.wanderingchaos.com/uc/110707.html This creature]] (well, the creature this demon is shapeshifted into) in ''WebComic/{{UC}}: Deviating from Normality''.
* [[http://xkcd.com/555/ This]] ''Webcomic/{{xkcd}}'' strip features an abuse of Bloody Mary. Explaining it would ruin the joke.
* Don't say Ironman in Austin, TX as shown why in {{roosterteeth}}'s webcomics, Michael "Burnie" Burns will be groundpounded.
* In ''Webcomic/TheOrderOfTheStick'', saying "mind flayer" or "illithid" will bring down copyright lawyers upon the speaker. Actually, pointing out ''any'' copyrighted material can do this, as Vaarsuvius realizes to their advantage when confronting [[OverusedCopyCatcharacter a (supposedly good-aligned) drow wizard armed with two swords.]]
* In ''Webcomic/{{Goblins}}'', the "Guide within the Well of Darkness" appears whenever someone says his name and answers a yes/no question. The catch? At the fourth summoning, he kills everyone. Incidentally, his name is Noe. Pronounced as "no". K'seliss invokes this trope and rips Noe's throat out right as he appears. It's just as cool as it sounds.
* In ''ChasingTheSunset'', speaking the name of the evil wizard Malvenicus causes lightning and a crack of [''Kra-ka-tow!''] thunder. Just like that. Malvenicus [''kra-ka-tow!''], as it turns out, is not all that evil; he just put an enchantment on his own name back when he was younger because he thought it would be funny.
* In ''Webcomic/UserFriendly'', Sid deals with an annoying intern by tricking him into saying "Hastur" three times. And Stef manages to avoid being shredded by an angry Indian god by calling upon Hastur, and letting the two duke it out. In another strip, the name is only spoken twice, but he still heard it since he happened to be in the next room.

[[folder:Web Original]]
* Fooby, the Kamikaze Watermelon, appears in ''WebAnimation/TheDementedCartoonMovie'' every time someone says "kamikaze watermelon."
* The Literature/BinderOfShame; El Disgusto's character is caught stealing from the other characters and killed. His last words are "You'll pay for this! You'll all pay for this! Hastur! Hastur! Hastur! Hastur! Hastur!" Fortunately (or unfortunately as it turns out), the wizard NPC resurrects the group.
* The Makeover Fairy from WebVideo/TheNostalgiaChick can do this, appearing in a puff of sparkleswhenever somebody says her name. Either it's a new ability or the others didn't know about it yet, since at one point Chick comments that she wasn't sure if it would work. Earlier in the show's run, WebVideo/TheNostalgiaCritic appeared to bitch her out for reviewing ''Franchise/{{Transformers}}'' when she said the word "manchild".
* WebVideo/TheNostalgiaCritic appeared when the Maven of the Eventide said Nostalgia three times like he was Film/{{Beetlejuice}} during WebVideo/VampireReviews. The two ask loudly how she even did that.
* The TV Tropes podcast ''On The Tropes'' Episode #61 has a discussion on this trope, that ultimately becomes an example of the trope itself.
* According to [[http://www.cracked.com/video_18545_the-horrifying-true-story-st.-patricks-day.html this]] Cracked video, if you say Saint Patrick three times on his feast day he will appear and offer spiritual guidance. If you let slip that you're celebrating it as a secular holiday you only vaguely understand, he will just yell at you.
* [[http://www.scp-wiki.net/scp-2521 SCP-2521]] of the Wiki/SCPFoundation will not only appear if you say it's name, it will appear if you say anything describing it or about it. And not only if you say it out loud, but if you use words at all in any way. As a result the entire article on it must be done in pictograms, and even the database must label it "●●|●●●●●|●●|●" instead of "2521" to avoid having it be summoned at the location of the database computer.

[[folder:Western Animation]]
* ''WesternAnimation/{{Freakazoid}}'' had the villain JustForFun/CandleJack who would appear randomly and kidnap whoever said his name. JustForFun/CandleJack himself says, "[[SchmuckBait Not a very bright group, are you?]]" The series also spoofed this in a CreditsGag: "Interesting Fact: If you spin around while saying '[[GagWords Huggbees]]' three times real quick, [[http://en.wikipedia.org/wiki/Pierre_Salinger Pierre Salinger]] will appear. Only he'll have... a beard!"
* ''WesternAnimation/GravityFalls'': In "Weirdmageddon", Bill Cipher refers to Xanthar as "The Being Whose Name Must Never Be Said", but then realizes that TheEndOfTheWorldAsWeKnowIt is a special enough occasion to warrant saying the name.
* In ''WesternAnimation/HarveyBirdmanAttorneyAtLaw'', saying Mentok the Mind Taker's real name, Mufti, summons powerful magical winds.
* In a ''WesternAnimation/SouthPark'' episode, saying Biggie Smalls' name three times while looking into a mirror will summon his ghost, which really pisses him off when he's got things to do.
* In ''WesternAnimation/PeterPanAndThePirates'', speaking the name of King Kyros, a powerful winter spirit, summons him to you. Unfortunately, Peter Pan forgets this little fact whilst he's showing off a gem that he boastfully admits to ''stealing'' from Kyros' home.
* ''WesternAnimation/StarVsTheForcesOfEvil'': In "Hungry Larry", the ritual to summon the eponymous monster involves writing his name in mustard on a take-out menu, licking it off, and then saying his name three times.

[[folder:Real Life]]
* The Chinese warlord [[UsefulNotes/ThreeKingdomsShuWeiWu Cao Cao]] (3rd century AD) was so well known for his rapid marches, the Chinese term for this trope since the time was "Speak of Cao Cao, and Cao Cao will appear."
* A once-popular internet meme says this of JustForFun/CandleJack, who kidnaps whoever speaks of him. It's a DiscreditedMeme nowadays - don't use it.
* In Spanish, the equivalent idiom for this translates as something like "Speak of the Holy Roman Emperor, and through the window he appears."
* As stated on the BearsAreBadNews page, people of old didn't dare say "bear", fearing that it would summon one.
* The old Swedish had a fear about wolves. It became so prevalent and went on for so long that the most popular nickname stopped being a nickname and became the proper name, though thankfully the fear fell into obscurity before it happened again.
* Mafioso Vincent "The Chin" Gigante was so feared in the mafia underworld that people would tap their chins rather than say his name out loud. More likely, it was done to bypass FBI wiretaps and whatnot.
* Demonologists usually advise people to not speak about the demon while in a demonically infested house. Some activities, like listening to recordings of exorcisms for instructional purposes, are also considered "opening doorways" that could attract the wrong kind of attention.
* Tagging somebody's name in a Facebook post alerts that person to the post. It's not uncommon for people to post the name on its own to get their attention.
* Tumblr allows users to invoke this; putting an @ symbol before their URL allows you to "mention" them, which puts a notification on their dashboard. Just typing someone's URL alone doesn't alert them, but since users have long been hashtagging each other in conversations and the new full-text search appears in the exact same spot as the old tag search it replaced, many of them are now in the habit of searching their own URL and will end up finding you anyway.
* The card of Death (but not, surprisingly, The Devil) in Tarots is also known as "The Nameless Arcane", since many feared that saying its name would summon it.
* You know, there's also [[ChurchOfHappyology at least one]] religious movement known to be really touchy about its public image that has a tendency to sic lawyers and protesters on anyone who says even remotely unflattering things about it.
* Hashtags on Website/{{Twitter}} allow one to do this not with a name, but with a topic. For example, if one criticizes a particular group of radicals that rallies under a given hashtag, expect to get flamed by 4-5 defenders of said group telling you that you are evil and that you work for the enemy, etc.
* Website/DeviantArt's mention system can summon certain users if you bring them up in a comment or deviation.
* An old ASVS (alt.startrek.vs.starwars) troll known as Tim was also commonly known as "TOWNMNBS" (The One Whose Name Must Not Be Spoken), due to his tendency to appear whenever anyone mentioned him. He also was known for inventing the "Timsult" a type of [[StealthInsult pseudo-insult]] that was harsh enough to upset the recipient but not harsh enough to [[GettingCrapPastTheRadar justify disciplinary action by the board moderators]]. The purpose of which would be to provoke people into using actual insults against him, and then reporting them so they would be banned.