[[quoteright:310:[[Series/StargateSG1 http://static.tvtropes.org/pmwiki/pub/images/Excalibur.JPG]]]]
[[caption-width-right:310:After meeting [[EgyptianMythology Ra]], [[NorseMythology Loki]], [[GreekMythology Cronus]], Olokun, [[HinduMythology Nirrti]], [[JapaneseMythology Amaterasu]], [[CelticMythology Camulus]], [[NativeAmericanMythology Zipacna]], [[SlavicMythology Svarog]], [[ChineseMythology Yu the Great]], [[MesopotamianMythology Marduk]], and MotherNature they were bound to come across a [[OnlyTheChosenMayWield sword in a stone]] sooner or later.[[note]]Just to drive the point home, the one on the right used to be the Syrian and Egyptian goddess of orgasms.[[/note]]]]

->''"Believe what?" asked Shadow. "What should I believe?"''
->''"'''Everything'''," roared the buffalo man.''
-->--''Literature/AmericanGods''

In {{fantasy}}, all myths, legends, and folk tales are either accurate descriptions of past events or accurate predictions of the future.

If the hero's got to do something BecauseDestinySaysSo, these are the official mandates that forces them to do it. Saying "It's just a myth" usually marks a [[JadeColoredGlasses jaded skeptic that has lost all faith in the world]] or a {{Muggle|s}} knee-deep in what's going to hit the fan.

AndManGrewProud, DominoRevelation, and PropheciesAreAlwaysRight are {{SubTrope}}s of this. For versions where the myth is ''based'' on truth but people got the details wrong, see GodGuise, CargoCult, AncientAstronauts, PhysicalGod, SufficientlyAdvancedAlien, and AGodAmI. If this treatment is given to only one pantheon/religion/what-have-you, see AMythologyIsTrue. For characters who might live in a world where AllMythsAreTrue and despite solid evidence don't believe it, see FlatEarthAtheist.

For the [[SciFiCounterpart scientific counterpart]], see AllTheoriesAreTrue. For the video game rumor counterpart, see InfallibleBabble. Someone with the tendency to exclaim "That can't exist!" in one of these settings my suffer from ArbitrarySkepticism.

CrossoverCosmology and FantasyKitchenSink are closely related. See also TheLegendOfChekhov.

Not to be confused with ClapYourHandsIfYouBelieve (and its sub-trope GodsNeedPrayerBadly), where believing in a myth ''makes'' it true. OneMythToExplainThemAll is if they all stem from the same source (aliens, wizards, etc).

----
!!Examples:

[[foldercontrol]]

[[folder:Anime and Manga]]
* ''Manga/SaintSeiya''. Blatantly obvious in the anime, with the addition of movies and a {{Filler}} arc. To the point where greek gods, Norse gods, Buddha, and friggin' ''Satan'' fought Seiya and Co. And the universe was created by Big Bang, [[spoiler:so it's possible that Athena reincarnated as a Raptor]].
* ''Anime/MazingerZ'' and ''Anime/GreatMazinger'': Dr. Hell joined an archaeological expedition to the Greek island of Bardos, thinking maybe several ancient legends told that island was defended by an army of [[HumongousMecha mechanical giants]] were true. Unfortunately to everybody else, he was right. ClassicalMythology plays an increasingly important role in each retelling of the series, until the point of Greek gods start showing up and ''Anime/GreatMazinger'' BigBad is revealed being [[spoiler:Hades]] in ShinMazinger.
* ''Manga/ShamanKing'' also does mention about all prophets/chosen people in different cultures as being Shaman Kings from previous tournaments, although they only imply that with the most known ones, Jesus and Buddha. Some spirits used by shamans seem to be portrayed as Gods, too, like Shamash, and the Sphynx.
* ''Manga/{{Devilman}}'' has Akira's friend Ryo tell him that Demons once roamed the Earth before being frozen in the arctic while humans dominated the planet. He also mentions that some demons got free, and could be the true causes of monster myths like Wolfmen, Dracula, and Ogres.
* ''Manga/{{Guyver}}'' suggests that the zoanoids changing between human and monster forms is the origin of myths like werewolves and vampires.
* ''Manga/ACertainScientificRailgun'' has as a running gag the characters mentioning urban legends that all end up being true.
* This is brought up in the second season of ''LightNovel/SpiceAndWolf'' when Holo's past is being discussed.
* In ''Manga/YuYuHakusho'', Genkai explains that Botan went to see King Yama. When Kaitou tells her he thought he wasn't real, [[DeadpanSnarker she]] says it isn't the time for stupid questions.
* Kind of subverted, kind of played straight in ''Manga/{{Arago}}''. For example, Werewolves don't exist, [[spoiler:but a wolf pelt that turns a person into a werewolf-like creature does.]]
* Only three legends are ever mentioned in ''Manga/FullmetalAlchemist'', two of which turn out to be true. The Xingese legend of the Western Sage is [[spoiler:about Ed and Al's father]], while the Amestrian legend of the Eastern Sage is [[spoiler:about "Father," the BigBad of the series]]. The third myth is presented when Ed compares the circumstances that caused his own amputations to the story of Icarus (of Greek Mythology) flying into the sun and getting burned. Whether the Icarus myth is true in the FMA world is never clarified.
* ''LightNovel/SaiunkokuMonogatari'':
** The story begins with Shuurei telling her students the story of their country's founding, ending it by saying that according to legend, the eight immortal sages who helped the first emperor found Saiunkoku are still alive in secret among the people. This is absolutely true, and Shuurei goes on to become personally (albeit unwittingly) acquainted with several of them.
** A little later in the first arc, Shuurei begins to tell Ryuuki the story of the Rose Princess and how she married a mortal man. This story is not only ''also'' true, it's [[spoiler:the story of her parents' marriage]].
* ''LightNovel/HighSchoolDXD'' has alot of mythologies existing in this story, Literature/ArsGoetia being the most prominent example. NorseMythology, HinduMythology, [[ClassicalMythology Greek Mythology]], it's all here though apparently there's also one more mythology that ''even the other gods of said mythology don't know about.'' The name of said mythology? [[spoiler: There is a breast god in this series.]]
* The second episode of ''LightNovel/{{Baccano}}'' gives us the UrbanLegend of the Rail Tracer: a monster that slowly snatches up and devours the passengers of the train [[SpeakOfTheDevil on which its tale is told on]]. Then a [[GambitPileup 3-way war]] breaks out over [[TrainJob train-hijacking rights]] and...''something'' decides to start picking off instigators and leaving their twisted and mutilated corpses. [[spoiler:Turns out that the Rail Tracer is the [[BadassNormal entirely human]] and [[RedHerringShirt supposedly dead]] train conductor that first told the story, and doesn't particularly like people messing up his train. Did we mention that he's also a not-entirely-sane assassin that likes a good RoaringRampageOfRevenge?]]
* Subverted in ''Manga/DragonBall'' when Roshi tells Krillin and Launch the origin myth of the Dragon Balls. The legend he tells is more realistically played: parts of it are true or are based on reality, but the portrayal of it is false.
[[/folder]]

[[folder:Audio Play]]
* Double Subverted in the AudioPlay/BigFinishDoctorWho adventure [[spoiler: ''[[http://tvtropes.org/pmwiki/pmwiki.php/Recap/BigFinishDoctorWho033Neverland Neverland]]''. The Doctor and the Time Lords head into a universe of Anti-Time to fix Charley's paradox, but it is revealed that the Time Lords have other motivations for heading there. It is revealed that legends on multiple planets speak of the great Time Lord Rassilon heading into the empire of Zagreus (the Anti-Verse) to face the beast himself. The legends seem to be true when they find the casket of Rassilon, which is given to them by the denizens of the Anti-Verse. However, it is revealed that the legends of Rassilon and Zagreus were planted by these so-called Neverpeople in order to lure the Time Lords into bringing the casket, which actually contains enough Anti-Time to destroy the universe. However, when the Doctor absorbs the Anti-Time into himself and the TARDIS to save the universe, a creature of Anti-Time is created inside him. It decides to take it's name from a creature of legend.]]
--> '''The Doctor''' : [[spoiler: I have become... ZAGREUS!]]
[[/folder]]

[[folder:Comic Books]]
* ComicBook/{{Hellboy}} IS this trope, except when he's fighting [[ThoseWackyNazis Nazis]], who are more often than not [[{{Ghostapo}} allied with the supernatural]] anyway.
* Lampshaded in issue #4 of the Franchise/MarvelUniverse miniseries ''Wisdom.''
--> '''Maureen Raven:''' Oh, for God's sake, the I Ching is true? Is there anything that ''isn't'' true?
* This was the original premise of Creator/MarvelComics' ''Eternals'', before they were [[CanonImmigrant shoehorned into]] the mainstream Marvel Universe. The Creator/JackKirby series had these beings and their enemies the Deviants, mistaken for gods and monsters and inspiring all of humanity's myths, legends and ancient religions. When they got switched to the FantasyKitchenSink of the MU, they were relegated to having merely been mistaken for ''actually-existing'' gods.
* In the Franchise/MarvelUniverse you have [[Comicbook/TheMightyThor Thor]] and [[Comicbook/TheIncredibleHercules Hercules]] able to work together. Heck, in the Marvel Universe, ALL pantheons are real. Their leaders have the occasional meeting, for crises such as, say; [[Comicbook/SecretInvasion Skrull invasions]]? In fact, the approach taken by Marvel seems to be that EVERYTHING they have ''ever'' published--not just the superhero comics, but horror, science fiction, romance, western, humor etc. are ALL TRUE and part of the same setting--details to be worked out on a case by case basis. Yes, even Comicbook/HowardTheDuck.
* In Franchise/TheDCU, even if you just look at the Marvel Family, you've got [[Comicbook/{{Shazam}} Captain Marvel ]] whose powers come from Solomon and a selection of Greek and Roman figures, as well as his rival, Black Adam who gets HIS powers from the Egyptian pantheon. Both collections of myths spell out "SHAZAM", so they both have the same magic transformation word.
* WordOfGod says ''Comicbook/TheLeagueOfExtraordinaryGentlemen'' deliberately plays on this.
* The overarching plot of both ''Comicbook/{{Fables}}'' and ''Jack of Fables'' is, of course, that all fictional characters really exist and are living in New York. ''Jack of Fables'' introduces characters that represent literary devices, the most amusing of which is probably the Pathetic Fallacy.
* Creator/DCComics is like Marvel in its 'everything we published counts' approach, though with a few more notable exceptions- which of their Vertigo line of comics stories count and which don't isn't terribly clear, for example. Or at least, it exists in ''some'' form (like Batman of Zur-En-Arrh being a psychological construct, a 'backup' for if Batman's mind should be otherwise broken.) These days, with a CrisisCrossover {{Cosmic Retcon}}ning out everything the current writer doesn't like at least once ever other year, it's hard to know what of the previous month's comics counted at any given time, let alone one from fifty years ago. However, we do have the approach to myth and legend as the trope describes: Greek gods? Totally exist. King Arthur? Ditto. Ghosts, TheLegionsOfHell, things [[OurDemonsAreDifferent called demons]] that ''aren't'' TheLegionsOfHell, vampires, Biblical figures? Even characters who don't primarily deal with the supernatural have had multiple run-ins with all of the above. We have ''main characters'' in most of those categories, in fact.
* Possibly to FantasyKitchenSink-levels in ''Webcomic/{{Digger}}''.
-->'''Ganesh:''' The Earth is so old, and home to so many strange things, that there is hardly an inch of ground that was never home to a shrine, or a god, or a battle, or some magical oddity. Even under the ground, you yourself have said, there are old gods, old prophecies, old lost things. It is not odd that this [[spoiler:bound god]] should be here, in this place. If anything, it is odd that we are not constantly hip-deep in such magical echoes of the past.
* Creator/NeilGaiman's ''Comicbook/TheSandman''. Where we learn that not only are all myths true, they themselves take a back seat to an even deeper and all-encompassing group of seven siblings known as The Endless, who embody seven big forces powering all the mythos throughout the entire universe.
* ''Comicbook/IZombie''. It's got the titular zombie, a ghost, a group of vampires, and a were-terrier. And this is all in the first two issues.
* The ''CVO: Covert Vampiric Operations'' series has this at its core. The titular squad of vampires fights all sorts of supernatural threats. In fact, the only major human member of CVO is their boss Overmars, whose orders the vampires follow without question (most of the time). Overmars's NumberTwo is an [[WickedCultured erudite demon]] named Nikodemus (who looks a little weird, being all red with large horns while wearing a suit). Their scientific expert is a nerdy zombie (who hasn't lost his mind or gained a taste for human flesh). In later issues, they get two more operatives, one of which is a human GeniusBruiser the size of a defensive lineman and a Japanese {{katana|sAreJustBetter}}-wielding girl who can [[VoluntaryShapeshifting turn into]] a [[SnakePeople snake-like creature]] complete with SssssnakeTalk. Their normal enemies include everything from zombies and demons to aliens and {{Eldritch Abomination}}s. They also have MagiTek called Artillica, which appears to be the focus of many issues. And that's just a sampling.
[[/folder]]

[[folder:Fairy Tales]]
* In "Literature/SleepingBeauty", when the prince comes and asks after the castle, he gets a whole slew of false answers; although one old man does know the truth, it's not the popular one.
-->''Everyone answered according as they had heard. Some said that it was a ruinous old castle, haunted by spirits.\\
Others, That all the sorcerers and witches of the country kept there their Sabbath or night's meeting.\\
The common opinion was: That an ogre lived there, and that he carried thither all the little children he could catch, that he might eat them up at his leisure, without anybody being able to follow him, as having himself only the power to pass through the wood.''
[[/folder]]

[[folder:FanFiction]]
* ''Fanfic/CosmicWarriors'', an AU Manga/SailorMoon retelling, the author starts the story off with the first villain Usagi faces being a reincarnated hero from Irish mythology, Diarmuid Ua Duibhne.
* ''FanFic/DiariesOfAMadman'' plays around with this. Several human myths are actually true, such as {{Merlin}}, but others such as the Ancient Greek goddess Athena are actually the subject of {{Demythtification}}.
* The ''Literature/HarryPotter'' fanfic ''Fanfic/OneWorld'', dramatically expands the list of mythical creatures that exist in the Harry Potter universe due to research on various myths. Thus far Hogwarts has a professor that's a [[Main/OurElvesAreBetter Drow]], [[Main/SelkiesAndWereseals Selkies]] and [[Main/SeaMonster Knuckers]] in Black Lake, TabletopGame/DungeonsAndDragons was invented by a former Cursebreaker that lost his magic, and [[spoiler: Voldemort has been shown to negotiate with devils and demons]].
* In ''Franchise/TheLegendOfZelda'' fanfic ''[[FanFic/TilTheSunGrowsCold Til the Sun Grows Cold and the Stars Grow Old]]'', all of the myths of Hyrule are proven to be true.
[[/folder]]

[[folder:Film]]
* ''Franchise/IndianaJones''. The Jewish story of the [[PublicDomainArtifact Arc of the Covenant]] and the medieval Christian tale [[PublicDomainArtifact Holy Grail]] are both proven to be unambiguously true. But so are some elements of Hinduism and the legend of the [[CrystalSkull Crystal Skulls]]. Not to mention stories of extraterrestrial visitation, and theories about AncientAstronauts.
* A variation shows up in ''Film/UndercoverBrother'', when Eddie Griffin learns from "The Brotherhood" that all the conspiracy theories believed by some credulous black people are true:
-->'''Conspiracy Brother''': What do you think? Things don't just happen by accident! Sometimes people -- mostly ''white'' people -- make things happen!
-->'''Undercover Brother''': So the conspiracies we've believed for all these years are true? The NBA really did institute the three point shot to give white boys a chance?
-->'''Conspiracy Brother''': Of course!
-->'''Undercover Brother''': Then the entertainment industry really * is* out to get Spike Lee?
-->'''Conspiracy Brother''': Come on man! Even Cher's won an Oscar! Cher!
-->'''Undercover Brother''': Then O.J. really didn't do it?
-->''everyone looks away and mumbles''
* In ''{{Laputa}}: Castle in the Sky'', Pazu believes the city of Laputa exists from the start when other say it's just a myth. He's not wrong, otherwise the movie would be a lot less interesting..
* ''Film/{{The Mummy|Trilogy}}'':
** "Hamunaptra's a myth." ...No it isn't. And no, the cursed mummy isn't a myth either.
** The sequels add the [[Wrestling/DwayneJohnson Scorpion King]] and the [[Creator/JetLi Dragon Emperor]].
* Invoked in ''Film/OhGod'' by God himself:
-->'''Jerry (reading from a list of questions):''' "'Is Jesus Christ the son of God?'"
-->'''God:''' "Jesus was my son. Buddha was my son. Mohammed, Moses, you, the man who said there was no room at the inn, was my son."
* The TV-Movie series, ''Film/TheLibrarian'' completely runs on this, especially since it's the Librarian's job to find and store all the world's legendary and mystical items in a hidden underground room in the Metropolitan Public Library so that they're be safe and won't be used for evil purposes. The room literally has everything: Pandora's Box, The Goose That Laid the Golden Egg, H.G. Wells' time machine, Excalibur, etc.
* ''Franchise/PiratesOfTheCaribbean'', which features Aztec and Greek (Calypso) gods, plus Davy Jones, the Fountain of Youth and working voodoo.
* In ''Film/EverAfter'', we find out that the legend of Cinderella stems from a true story of the narrator's great-great-grandmother.
[[/folder]]

[[folder:Literature]]
* In Erika Griffin's novel, ''[[http://www.amazon.com/One-Who-Waited-Erika-Griffin/dp/1411627164 The One Who Waited]]'', Alice ponders this during the course of the story, as she comes to realize that there are such things as Boogeymen and wonders if other monsters might exist as well.
* Stephen Marley's ''Literature/ChiaBlackDragon'' trilogy ''Sorceress'', ''Spirit Mirror'', and ''Mortal Mask'', take place in 2nd century China, but there also appear Indian Buddhists, ancient Egyptians (in the back story) and a few Christians. It is suggested that the mythologies and afterlives of all four religions (Chinese, Buddhist, Egyptian and Christian) all exist. In addition to the Stephen Marley's own original myths and creatures, of course
* This is the whole point of Neil Gaiman's novel ''Literature/AmericanGods,'' in which every god/spirit/devil/etc. that mankind has ever dreamed up are still around, mostly living like normal folks. (For instance, Thoth and Anubis run a funeral parlor.)
* In K.A. Applegate's ''Literature/{{Everworld}}'' series, ''every'' god from ''every'' mythology gets together, and they create a parallel universe where they ''all'' rule. Complete with mythical creatures in addition to humans and mundane wildlife. This causes some problems when ''every'' god has an extensive cult, and they're ''all militant.'' Kill the heretic for worshiping Aphrodite and not Quetzalcoatl! Furthermore, several alien gods from other universes decide to crash the party, including the god-eating god Ka Anor of the Hetwan.
* In the shared {{Verse}} of Creator/RickRiordan's works:
** ''Literature/PercyJacksonAndTheOlympians'', the Greek gods are real: features of Greek myths move around depending on where the center of Western civilization is. Olympus is on top of the Empire State Building; the Underworld is in Los Angeles.
** ''Literature/TheKaneChronicles'' the Ancient Egyptian Pantheon exists too.
** ''Literature/TheHeroesOfOlympus'' adds the Roman Gods as the Greek Gods' alternate personalities.
** After ''The Heroes of Olympus'' concludes, Riordan will be writing a series based on Norse mythology.
* Creator/RobertAHeinlein's later novels, beginning with the novel ''Literature/TheNumberOfTheBeast'' (though he used the concept almost 40 years earlier in his short story ''Elsewhen''), deal with the World As Myth, and expand it to the ''[[TheMultiverse multiverse]]''. In his multiverse, All Stories Are True and Exist, somewhere -- and if you've read the stories, it's possible to visit the universe in which the story takes place. He shows this by having his four protagonists visit several universes, albeit unknowing. A side effect of this is that ''all'' worlds are part of a story, somewhere... and that anyone who writes a story has become the literal God of the universe the story creates.
* Literature/HarryPotter's world uses this trope, much to Uncle Vernon's dismay.
* Children's author RobinJarvis loves this trope. The ending of the ''Wyrd Museum'' series features [[spoiler: the deaths of the Nornir by the Spear of Antioch, as well as the ice giants being finally defeated by the Eye of Balor on a spinning weathercock]].
* True in John Barnes's ''Literature/OneForTheMorningGlory''. It's {{lampshade|Hanging}}d as one of the distinguishing marks of the kingdom, to distinguish it from lands that are merely actual.
* The ''Literature/HaroldShea'' series of short stories features a multiverse much like that of ''The Number of The Beast''.
* While the FantasyKitchenSink of ''Literature/KittyNorville'' makes this trope fairly self-evident, a particularly effective and even insightful example occurs in book two when Ahmed explains that [[BeethovenWasAnAlienSpy Daniel of the lion's den was really a werelion]] and Enkidu of ''Gilgamesh'' was a werecreature as well.
->''This was thousands of years ago, remember. Humankind and animalkind were closer then--our years in the Garden together were not so long ago. And our kind, the lycanthropes, were the bridge between the two...It saddens me that the tribes in this country do not tell the old tales to one another. If we gathered to tell stories and drink more, there would not be so much fighting, yes?''
* In Creator/JasperFforde's ''Literature/ThursdayNext'' and ''Literature/NurseryCrime'' series all fictional characters are real(ish) and exist in a parallel universe called the Well of Stories. Fictional characters do have a few traits that differentiate them from "real" people (it's complicated), but in the Bookworld all stories are true.
* The entire basis of Creator/RobertAntonWilson's ''Literature/{{Illuminatus}} Trilogy'' is that all conspiracy theories are true, especially the ones that contradict each other.
* In the universe of ChristopherMoore's books the First Nation [[GreatGazoo Trickster God]] Coyote is the younger brother of the Egyptian deity Anubis, Jesus plays poker with an upstart CargoCult deity and there are vampires, djinn and angels, among other things.
* ''Literature/TheDresdenFiles'' loves this trope. Legendary creatures from the folklore of every part of the world exist, deities from all pantheons are real (though some aren't active anymore), functional magic is an everyday reality, etc. It is heavily implied that these things are not real because they are myths, but myths because they are real - people who had experiences with non-mortals told stories about them that the mortal world consumed. For example, [[Creator/BramStoker Bram Stoker]]'s ''{{Literature/Dracula}}'' was commissioned by the White Council to educate people about Black Court vampires, who were prevalent at the time (and it worked - Black Court vampires are very rare in the series). Also, Mab has a autographed, personalized original copy of ''[[Creator/TheBrothersGrimm Grimms' Fairy Tales]]''. One reason this might occur in the Dresdenverse is that most GodsNeedPrayerBadly.
* S. M. Stirling's works:
** ''Literature/{{Emberverse}}'', while not exactly working together the Christian, Celtic and Norse pantheons are all backing the [[CaptainErsatz Arthurtype hero]] in various ways against the ReligionOfEvil for {{Eldritch Abomination}}s.
** In the ''Literature/{{Shadowspawn}}'' series, the title beings are the basic for just about every legend of magic or monsters (especially vampires and werecritters) there is.
* In Anthony C. Gilbert's ''[[http://www.lulu.com/content/553426 Farther Up and Farther In]]'' AllMythsAreTrue about life after death. Except, apparently, the belief that there isn't any, because the narrator is an atheist but gets sent to Hell, the Christian afterlife being the default for Westerners without other positive beliefs. Escaping from Hell (!) leads to a CrossoverCosmology where he meets Freja, Pan, Monkey and others: the final message (logically, given the opening premise) is that [[spoiler: All Gods Are One and we are One with them.]]
* In Creator/DouglasAdams' ''Literature/TheLongDarkTeaTimeOfTheSoul,'' all the Norse gods and legends are true. Also involves a subversion of GodsNeedPrayerBadly, as Thor comments at one point that humanity created the gods, but just because we no longer need them doesn't mean they go away. I Ching also has a truth, as do other "impossibilities".
* In ''Rainbow Mars'' by Creator/LarryNiven, all of the Martian legends are true, from H. 'G. Wells to Edgar Rice Burroughs.
* Creator/RobertEHoward's ''Franchise/ConanTheBarbarian'' has a number of gods that would, in Howard's [[TheVerse world]] become the basis of more modern deities. Crom, Lir, Babd, Macha and Nemain are all Celtic, the Hyborian Mitra becomes [[http://en.wikipedia.org/wiki/Mithra Mithra]], who's also something of a CrystalDragonJesus, the Shemite Ishtar becomes the Babylonian [[http://en.wikipedia.org/wiki/Ishtar Ishtar]], the Turanian/Hyrkanian Erlik becomes the Mongolian [[http://en.wikipedia.org/wiki/Erlik Erlik]] and the Stygian Set seems to be the basis for both the Egyptian [[http://en.wikipedia.org/wiki/Set_(mythology) Set]] and [[http://en.wikipedia.org/wiki/Apep Apep]]
* Creator/JohnCWright specializes in this: both his ''Literature/WarOfTheDreaming'' and ''[[Literature/ChroniclesOfChaos Orphans of Chaos]]'' series have appearances by every figure in ancient [[NorseMythology lore]] and [[ClassicalMythology myth]].
* ''Literature/TheDalemarkQuartet'' by Creator/DianaWynneJones features its own in-universe pantheon and myths, all of which are far more real than people believe (and far more factual than recorded history).
* ''Literature/TheSookieStackhouseMysteries'': In addition to vampires, there are [[spoiler: Meaneds, shifters, Weres(not just wolves), fairies, demons, witches, goblins, and even vampire Elvis]].
* To the utter lack of surprise of many, ''Literature/DigitalDevilStory'', the original source material for the famous MegaTen video game series, features such specimens as Kerberos, Loki, [[spoiler: Izanami]]and [[spoiler: Set]].
* ''Literature/TheDarkIsRising'' combines CelticMythology and KingArthur legends with touches of [[ClassicalMythology Greek]] and EgyptianMythology.
* From ''Literature/PrincipiaDiscordia'':
-->'''Greater Poop''': Is Eris true?
-->'''Malaclypse the Younger''': Everything is true.
-->'''GP''': Even false things?
-->'''M2''': Even false things are true.
-->'''GP''': How can that be?
-->'''M2''': I don't know man, I didn't do it.
* In the ''Literature/TalesOfTheFiveHundredKingdoms'' by Creator/MercedesLackey, all fairy tales, from Russian to Middle Eastern to the Brothers Grimm and anything else, are true. In fact, a magical force known as the Tradition actively works to try and make them come true. Those that are GenreSavvy will use the Tradition to their advantage.
* The Bifrost Guardians by Mickey Zucker Reichert is another all myths are true, with the melding of technology to Norse myths to Christianity.
* This is the premise of the novel ''Out of Their Minds'' by CliffordSimak.
* In ''Literature/PrinceCaspian'' from ''Literature/TheChroniclesOfNarnia'': Caspian was always taught that the "old Narnians" were myths and fairy tales, then he learns that they are in fact real. The appearance of the Pevensies and Aslan also turns out to be this for many old Narnians.
* In Creator/OrsonScottCard's ''Literature/TheLostGate'' the Westillian Families are the basis of all Indo-European pantheons. It is inferred that other cultures deities, including the Abrahamic one have similar origins.
* Creator/TerryPratchett's ''Literature/{{Discworld}}'' series plays with this, like everything else.
** The universe is itself shaped by belief--if enough people believe something is true, it becomes true. ''Discworld/{{Hogfather}}'' explores the extremes of this idea with such characters as the Verruca Gnome and Bilius, the Oh God of Hangovers.
** In [[PunnyName Djelibeybi]], as seen in ''Discworld/{{Pyramids}}'', the FantasyCounterpartCulture of Egypt, all myths are true concerning their gods, which have been evolving and developing for seven thousand years. The priests are said to "never throw away a god in case they turn out to be useful" and to be able to "give headroom to a collection of ideas that would have made a theoretical physicist give in and hand in his badge" (paraphrased).
* In the ''Literature/{{Dune}}'' novels, the Bene Gesserit have a whole system of false myths called the Missionaria Protectiva. They purposely spread made-up prophecies that any member of their order can fulfill if needed. Thus, a member stranded on an otherwise hostile world can appear to be The Woman From the Prophecy.
* In Brandon Sanderson's ''[[Literature/MistbornTheOriginalTrilogy The Well of Ascension]]'', the TwistEnding is that [[spoiler:the prophecies have been deliberately altered by a powerful being in order to manipulate humanity/the heroes into freeing it]].
* In ''Literature/HisDarkMaterials'', many divining methods are actually just "talking to Dust", the sentient matter forming most of the universe.
* ''Literature/YoungWizards'' plays with this trope, in that many myths were inspired by the non-mythical actions of the godlike PowersThatBe. For example, the [[CelestialParagonsAndArchangels extremely powerful]] Winged Defender is the inspiration for (among other things) Thor, Athena, Prometheus and the archangel Michael.
* Lampshaded explicitly several times in both ''Literature/TheMortalInstruments'' and ''Literature/InfernalDevices''.
* In [[Literature/{{Reckless}} The Mirrorworld Series]] All Fairytales Are True. Even [[DarkerAndEdgier Sleeping Beauty]] shows up!
* Many fairy tales (if not all) are real tales from ''Literature/TheLandOfStories''.
* Lizzie visits several worlds in Literature/SpiderCircus and encounters werewolves, vampires, selkies and more. It seems that people who can travel to other worlds are responsible for the spreading of these myths.
[[/folder]]

[[folder:Live-Action TV]]
* Subverted as a RunningGag throughout ''Series/BuffyTheVampireSlayer'' and ''Series/{{Angel}}''. Despite living in a world where vampires, werewolves, witches, dragons, demons, and zombies are all real and have been encountered by the main cast at one point or another, everyone agrees completely unanimously that leprechauns aren't real. Unfortunately, Santa is also real, a child-eating demon who comes down chimneys.
* ''Series/{{Fringe}}'' started off seeming like a SpiritualSuccessor to ''Series/TheXFiles'', focusing on a unit of the FBI investigating seemingly paranormal phenomena and switching between MonsterOfTheWeek episodes and MythArc episodes. However, it's gradually revealed that ''everything'' paranormal is part of one pattern that began when [[spoiler: Walter crossed into an alternate universe to save that universe's version of his son]]. In other words, what seems paranormal is only pseudoscientific. Also, in one episode, Walter makes it clear that while he believes in many things, he draws the line at ghosts.
* The final ''Series/{{Quatermass}}'' serial has stone circles (which do nothing; the stones only mark the places where people congregated in the past) around the world becoming activated; people congregate there (an activated race memory), expecting to be: contacted by aliens, 'raptured' into heaven, 'go to the planet', etc. Instead, they are 'harvested' by an interstellar energy beam that reduces them to dust, with a tiny fraction lost to the beam. It is further suggested that all religions, and by extension, all of human politics, wars and history, have been the result of this race memory: to congregate and be harvested.
* Averted in ''Series/BabylonFive'''s episode "A Late Delivery From Avalon"--an arrival on the Babylon 5 station claims to be King Arthur, brought back among humanity after a long hiatus (when he was "taken to Avalon" on a mysterious "ship"). There is actual discussion among the main characters as to whether this could be true, since there was already a known case where the Vorlons did abduct a historical figure and used him to do their bidding in other times ([[spoiler: "Comes the [[JackTheRipper Inquisitor]]"]]). But it turns out [[spoiler: he was from the present time, suffering trauma-induced delusion from being the officer who fired the first shot that started the Earth-Minbari War years ago]].
* ''Series/WizardsOfWaverlyPlace'' seems to be something of a kitchen sink fantasy series. Always PlayedForLaughs.
* ''Series/{{Charmed}}'':
** Angels? Check. Vampires? Check. Titans? Check. Human representations of the animals in the Chinese calendar? Sure, why the hell not?
** An interesting case occurs with Pandora's Box. In the season 3 episode "Sin Francisco", Leo claims a box holding the seven deadly sins inspired the legend of Pandora's Box, implying it didn't exist. The season 7 episode "Little Box of Horrors" would have the Charmed Ones deal with the actual Pandora's Box.
* In ''Series/LostGirl'', all mythological creatures (including phoenixes and unicorns) are real and are really [[TheFairFolk Fae]]. [[BadassNormal Kenzi]] takes it all in stride, then becomes absolutely terrified when she realizes this means BabaYaga is real. Later, nobody can find any references to the Garuda, because the race actually predates the Fae and no myths or legends of them were written or told.
[[/folder]]

[[folder:Tabletop Games]]
* Subverted in ''TabletopGame/MageTheAwakening'', where part of being a mage is sorting through which myths are true and which are not. Note that, in this case, "true" probably means "contains a tiny kernel of actual supernatural, historical or cosmic insight which was either implanted or leaked through into the human consciousness", while "not true" probably means "was deliberately fabricated by other mages in order to mislead those who would seek the truth, was deliberately fabricated by other mages in order manipulate the course of human culture, or was just a myth that people came up with".
* There is a general ''TabletopGame/WorldOfDarkness'' skill called "Occult" which allows you to attempt to tell whether some myth is true or not. This is exceptionally valuable to Mages because of the aforementioned nature of their power: if they get it wrong, it may be correct for exactly as long as they're paying attention to it, then revert to the way it actually really is the moment they stop paying attention. This can be even worse than getting it wrong in the first place. Consider trapping a vampire in a corner by leaving a holy symbol in the middle of the room, then going out for coffee... with the vampire no longer trapped the moment your back is turned.
* The ''TabletopGame/{{Eberron}}'' setting of ''TabletopGame/DungeonsAndDragons'' has a version of this: in contrast to most settings in which Clerics derive their powers from one of a set of specific gods chosen by the DM and which definitely and demonstrably exist, in Eberron, anything a cleric believes in sufficiently works. Clerics can be devoted to abstract concepts (like "Justice") instead of specific gods, and there's at least one religion in which the followers ''know'' their god doesn't exist (yet) because they're in the process of ''building him''.
* In ''TabletopGame/RuneQuest'', the different races and cultures each have their own religion, with mutually incompatible stories about the creation of the world and the nature of reality. However, in-game, all myths are true, and priests of the rival pantheons are equally powerful.
* ''TabletopGame/{{Shadowrun}}'' has everything from Sasquatch to both Western and Eastern Dragons reappearing after 2012. And pretty much every tradition of magic actually works now and summons different spirits ranging from angels to kami to nature spirits.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/TheElderScrolls'':
** ''VideoGame/TheElderScrollsIIIMorrowind'' features an exception, in that the particulars of a certain historical event relevant to the main plot of the game is [[TheRashomon recounted differently by different parties]]. This is more a case of deliberate revisionism. The main quest still requires the player to live up to a prophecy's version of the champion against the BigBad. He turns out to be something of a WellIntentionedExtremist.
** Played with humorously in ''[[VideoGame/TheElderScrollsIVOblivion Oblivion]]'' where Sheogorath asks you (or you ask yourself if you've become Sheogorath) to fulfill a prophecy a small village has about the end of the world that includes attacks by rats and ''FLAMING DOGS DROPPING FROM THE SKY''. The prophecy is used as little more than a prank.
* The GameBoy game ''Final Fantasy Legend II'' (''SaGa2'' in Japan) avoids this. One world your characters explore has a myth that turns out to be true and another myth that turns out to be false. Also, [[spoiler: there are actually 78 "MAGI", not the 77 that you are told about at the beginning of the game.]]
* In ''VideoGame/PaperMarioTheThousandYearDoor'':
** Professor Frankly encounters conflicting theories on the nature of the treasure he's looking for. Eventually one of the theories turns out to be true: the treasure is an [[spoiler: ancient demon. But later it is revealed that the 'real' treasure was a Dried Shroom, the weakest healing item in the game.]]
** In the same district of Rogueport that Frankly's house is located in, you can find a quirky storyteller who is glad to spin all sorts of old stories. But that tale about the horrible evil monster and the four heroes who fought it before being themselves sealed away couldn't be true, right? [[spoiler:Of course it is. The monster is a demon sleeping underneath Rogueport ''right now'' and Mario actually encounters each of the heroes in the form of talking cursed treasure chests. They're pretty nice.]]
* ''VideoGame/TombRaider2013'': Over the course of the game, Lara discovers that the legends of {{Hi|storicalDomainCharacter}}miko, such as her [[PowerOfTheStorm power over the weather]], aren't just legends.
* In ''[[VideoGame/FireEmblemTellius Fire Emblem: Path of Radiance]]'', the heroes learn that a medallion holds a [[SealedEvilInACan dark god]] who will bring TheEndOfTheWorldAsWeKnowIt if freed, and it can be freed by MagicMusic or a huge war. The fact that certain people can become mindless berserkers by wielding the relic reinforces this belief. But in the sequel, ''Radiant Dawn'' it turns out to be a lie spread by the Dragon Laguz king in vain hopes that it'll prevent war between everyone in Tellius. In truth, endless war will actually awaken the goddess Ashera, who will see the wars as a sign that those living in Tellius are failures, and must be purged away to allow for a perfect world.
* In the ''VideoGame/ShadowHearts'' series all myths are true, though very often in ridiculous, bizarre and over the top ways.
* Some of the local legends recounted to the protagonists of ''VideoGame/ChronoCross'' turn out to be... slightly skewed.
* Averted in ''[[VideoGame/StarControl Star Control II]]''. [[spoiler:The Black Spathi Squadron]] is fictional and has no effect on the plot, and many religious beliefs and local legends are brought up which are never mentioned or investigated again.
* In the ''Videogame/DarkParables'' series of PC games, all fairy tales are true - and interconnected. Their sister series ''Videogame/{{Cursery}}'' says that all nursery rhymes are true and created by Mother Goose herself.
* ''VideoGame/MetroLastLight'' does this to a fair degree. While the novel of Metro 2033 was pretty steeped in ambiguity, Metro Last Light takes a different route with it's storytelling. The nosalis rhino is said to be a legend one level before it's fought and, of course, who could forget: "You may still harbor dreams of looking for some legendary artifacts, like the proverbial Map of Secret Metro, but... I think I'll have to disappoint you."
* In ''VideoGame/MortalKombat9'''s story mode, Nightwolf can sometimes be heard referring to Raiden as "Haokah", the lightning spirit of the Lakota tribe, giving credence that Raiden has at least appeared to their culture and is likely the god of thunder to anyone else who had one (Zeus, Heracles, Thor, etc.).
* Of all Franchise/ShinMegamiTensei line ups so far, ''[[Franchise/ShinMegamiTenseiPersona Persona]]'' series might be the most fitting in this trope because it's the most mundane and closest to current Earth in term of setting and mythology. People aware of the legends and often discuss it if the topic is brought up, but only select few are aware that those gods are exist and can be summoned. Since this particular verse, especially in ''Persona 2'', is run by ClapYourHandsIfYouBelieve rule, if rumor circulates and people en masse come to believe it, it will without fail becomes reality. And since mythology exists in the first place as a belief, you do the math. The exact mechanic of it are varies depending on the particular works, but the basic is the same.
** ''Persona 1'': A demon summoning game turns out summon real demons! [[spoiler:And there's also ManInTheMachine situation involved to put the entire world into LotusEaterMachine where ClapYourHandsIfYouBelieve is ''enforced''.]]
** ''Persona 2'': It's even a [[SlidingScaleOfGameplayAndStoryIntegration Gameplay and Story Integration]]! Rumor will comes true because of AnthropomorphicPersonification of both good and bad side of humanity decided to make a bet over humanity's survival. A ramen shop turns out to be a secret weapon cache? AncientAstronauts? Hitler's still alive and amassing army? All can happen and it does happen, depending on how you spread the rumor.
** ''Persona 3'': A local [[TheEndIsNigh apocalypse cult]] that worship a Goddess of Death gains power and influence among public, which then empowers said Goddess of Death into granting them said apocalypse. Also, your school nurse's rambling about Tarot Arcana is true through Social Link.
** ''Persona 4'': The Midnight Channel, a television channel that only appears in a rainy midnight hour will foresight your future soulmate. The second part isn't exactly true; the channel only shows a person the audience wants to see. Within the channel, a Shadow of that person will take form of what the audience wants to see combined with what said person actually is. If that person is rumored to be a man when she's actually insecure and hiding her gender, the Shadow has its appearance twisted and takes form of a genderbender.
* In the ''Franchise/{{Castlevania}}'' series just about every fictional creature has appeared at some point, mostly as the enemies the player fights.
* ''VideoGame/BlazBlue'' borrows seiðr (here rendered as "seither"), as well as symbolism of Ragnarök and Ratatoskr from Norse Myth. It also has playable vampires and werewolves. Though the heaviest influence is Shinto, with Murakumo (Nu), Susanooh (Hakumen) and Orochi (Black Beast) being integral to the GroundHogDayLoop of ''Calamity Trigger''. And in ''Chronophantasma'', the BiggerBad is revealed to be [[spoiler:none other than Izanami herself.]]
[[/folder]]

[[folder: Visual Novels]]
* The Franchise/{{Nasuverse}} is filled with nearly every mythological being you could possibly think of, plus a few more. Vampires, werewolves, two different types of ghosts, demons, unicorns, so many more monsters, gods and of course, the incredibly complicated FunctionalMagic. ''VisualNovel/FateStayNight'' has the Holy Grail War, with the Masters summoning Servants that are based on heroes that actually existed there [[spoiler: except for Fake Assassin]].
[[/folder]]

[[folder:Web Comics]]
* Myths and superstitions in ''Webcomic/TalesOfTheQuestor'' tend to be problematic after a few too many generations. Some of them end up being accurate, but for each one that actually is, you've got a few dozen that are corrupted from translation issues or pure age, and hundreds that are plain false or started up from illogical premises. It's also a rule for the setting that no one can see the future, so prophecy tends to ''always'' be wrong.
* In ''Webcomic/{{Thunderstruck}}'', the two leads are sisters. One is an atheist (but not a HollywoodAtheist) and the other is a Christian, but not HolierThanThou. They're ''both'' wrong. The series also has a FantasyKitchenSink.
* Subverted in [[http://abe-kroenen.livejournal.com/59909.html#cutid1 this]] ''AbeKroenen'' comic. Of course, everyone present takes the fact that Atlantis exists in the first place as unsurprising.
* Webcomic/WaywardSons focuses mainly on Greek mythology, but features figures from several other ancient cultures.
* [[http://www.skindeepcomic.com/archive/ridiculous-creatures-1/ This]] short story from ''Webcomic/SkinDeep''. "How am I supposed to know what is actually fiction around here anymore?"
* In ''Webcomic/{{Hexenringe}}'', all legends and myths known in the real world are based on actual events in Xanadan (faerie dimension) and when any legends and myths (or any story, actually) are recorded or represented through creative means, such versions appear in Märagan (Imaginary dimension).
* ''Webcomic/HolyBibble'' starts from the origin of the universe and begins to unfold the story of all myths, using character types (such as the God of War) to merge multiple gods into one person.
* The main driving plot of ''{{Webcomic/Sire}}''. All works of classic literature actually happened and the protagonists passed on their narratives down the bloodlines, bestowing their descendants with gifts and curses relating to their stories.
* ''Webcomic/CyanideAndHappiness'' explores the possibility that [[http://explosm.net/comics/3442/ All Spam is True]]
[[/folder]]

[[folder:Web Original]]
* ''Literature/{{Tasakeru}}'': [[spoiler: True in-universe. Each sentient sees their species' version of the God of Time the first time Zero becomes his ''[[GodInHumanForm keshin]]''.]]
* In ''Phaeton'' if a myth isn't true already then it can become true through the power of the Enigma. Sometimes mythical versions of creatures who already exist become true, that's when things get complicated.
* Wiki/TheWanderersLibrary acts as a multi-universal, and as such, almost anything can be found within, from the grim reaper to Native American gods.
* In ''Literature/TalesoftheBigBadWolf'' there is the belief that myths are true accounts of past, present, and future of some characters but this point is arguable. It appears that "some" may be under debate as that has some problematic consequences for the figures who have a counterpart in fairy tales and myths.
* Parodied in this collection of ironic Teach the Controversy [[http://controversy.wearscience.com/ t-Shirts]].
[[/folder]]

[[folder:Western Animation]]
* In ''WesternAnimation/Ben10AlienForce'', Grandpa Max reveals to Ben and co. that many beasts and cryptids are real and in fact aliens... but he dismisses Bigfoot as just some guy in a costume.
* In one episode of '' WesternAnimation/TheRealGhostbusters'', the Ghostbusters must deal with a creature from Irish folklore. According to legend, the creature can only be stopped by a four-leaf clover. All the characters go out searching for one, except Egon, who, playing the role of AgentScully, insists that the creature can be captured using the same "scientific" methods they always use. In the end, the four-leaf clover fails (it was a fake taken from a parade float), and Egon saves the day by capturing the creature "scientifically", exactly as he said he would. Despite this exception, the show generally followed this trope faithfully, as did its SequelSeries ''WesternAnimation/ExtremeGhostbusters''.
* ''WesternAnimation/RoswellConspiracies'': All mythological creatures are actually aliens who have been on Earth for centuries, or millenia.
* ''{{WesternAnimation/Gargoyles}}'' took the stance that "All myths are true, some of them are ''accurate''."
* In the pilot episode of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', the legend of Nightmare Moon and the Elements of Harmony are dismissed by all as an "old pony's tale", even by the millennia-old Princess Celestia. Of course, not only does it turn out that they're both real, but Nightmare Moon is the younger sister of Celestia, who deliberately passed them off as myths so her student Twilight Sparkle could fulfill a prophecy to return her sister to normal.
[[/folder]]

[[folder:Other]]
* ''{{Franchise/BIONICLE}}'' has made liberal use of this, though most of the myths have been distorted through the ages, and the rest have other things keeping them from being perfectly straight examples:
** In the first few years of the franchise, each time a new threat appeared, the Turaga elders had a legend ready to explain their presence. Eventually, the Toa got [[RageAgainstTheMentor rather annoyed]] with being kept out of the loop until the last minute, finally getting the Turaga to explain just where they got all their information:
** The original backstory said that the Great Spirit brought the Matoran out of darkness to the island of Mata Nui. We later find out that it was actually the Turaga who rescued them (as Toa Metru) from their ruined city of Metru Nui, they just credited the Spirit with giving them the strength and abilities to do so. (They also treated Metru Nui's existence as a [[TheGreatestStoryNeverTold Greatest Story Never Told]] to keep the Matoran from remembering and getting homesick.)
** One story said that poor workers were sent to the dreaded realm of Karzahni to be punished. In truth, poor workers were sent to Karzahni to be ''fixed''; it's just that Karzahni was a really crappy healer and he never let anyone leave.
** One legend that ''isn't'' real is that of the monster Irnakk -- that is, it ''wasn't'' real, until the Piraka entered an area that brought worst fears to life... (Thankfully, Irnakk only existed briefly before vanishing.)
* Steampunk-themed band ''Music/AbneyPark'' explores this in many of their songs, most notably in the aptly named "All the Myths are True".
[[/folder]]

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