->'''Geralt''': You're clearly not human. What are you? A demon? A djinn?
->'''[[{{Satan}} O'Dimm]]''': Do you truly wish to know?
->'''Geralt''': Yes.
->'''O'Dimm''': No, Geralt, you don't. This one time I will spare you and not grant your wish. ''(...)'' [[GoMadFromTheRevelation All who have learned my true name are dead, mad, or both.]] [[PragmaticVillainy But I still need you.]]
-->--''Videogame/TheWitcher3WildHunt, Hearts of Stone''

->''"Fear names. Names have power in identity. Others can use names as weapons. Names are a hook that can be used to track you... Remain nameless, and you shall be safe.\\
I am The Nameless One."''
-->-- ''[[VideoGame/PlanescapeTorment Planescape: Torment]]''

->''Only I know your true purpose in this world, Lombax. '''Only I know your true name!'''''
-->-- '''Emperor Tachyon''', ''VideoGame/RatchetAndClankFutureToolsOfDestruction''

->(''a Macbeth-esque witch/Carrionite alien howls in pain/rage and vanishes'')\\
'''Martha:''' What did you do?\\
'''Tenth Doctor:''' I named her. The power of a name. That's '''old magic.'''
-->-- ''Series/DoctorWho'', [[Recap/DoctorWhoS29E2TheShakespeareCode "The Shakespeare Code"]]

->'''Rose:'''I know your true name, Literature/BabaYaga. Do you wish me to shout it now, so that all of the animals of the forest, all the birds of the air, every passing nixie and boggart will know it too? Your name will be as common as crab-grass. Would you like that, Baba Yaga?\\
'''Baba Yaga:''' You're lying. You do not know my name.\\
'''Rose:''' Perhaps. Do you wish to find out how loudly I can shout?
-->-- ''ComicBook/TheBooksOfMagic'', "Land of Summer's Twilight"

->''You know enough not to look in my eyes, but you do not know not to ask me my name?''
-->--'''[[OurVampiresAreDifferent Constantine]]''', ''Sunshine'' by Creator/{{Robin McKinley}}

->''Names, capital N, have power. If you know something's name, you automatically have a conduit with which you can reach out and touch it, a way to home in on it with magic. [[DeconstructedTrope Sometimes this can be a really bad idea.]] Speak the Name of a big, bad, spiritual entity and you might be able to touch it, sure--[[InvertedTrope but]] it can touch ''you'' right back, [[SpeakOfTheDevil and the big boys tend to do it a lot harder than any mortal.]]''
-->--'''Harry Dresden''', ''Literature/SmallFavor''

->''My name is Kvothe. [[BadassBoast Conjure by it at your own risk.]]''

->''The name is the thing, and the true name is the true thing.''
-->-- ''[[{{Literature/Earthsea}} The Rule of Names]]''

->''Look, my name, my "real name", that is ''not the point''. The name I chose is the Doctor. The name you choose, it's like a promise you make.''
-->-- The '''Eleventh Doctor''', [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]]

->''"A long time ago, when the world was so new nothing had a name, [[EldritchAbomination something]] woke up. It learned all about what was and what would be... but most of all it learned what couldn't be, what shouldn't be. And it gave those things names, names it wrote on indestructible pages, [[IKnowYourTrueName because a namer has mastery of the named]]."''
-->-- '''Diabolique''', ''Darkhold'' #10

->In exchange for sponsorship from [[EldritchAbomination the Children]], the [[NeglectfulPrecursors first tribe]] became their acolytes; the mortals accepted the burden of remembering their masters' existence when They vanquished them from mortal memory. The first tribe accepted the bargain in bad faith, however, believing that by knowing the true names of these malignant creatures they would have true power over them. Such is the ignorance of primitive people. [[EvilIsNotAToy Knowing something's true name gives it sway over you as well]]. Power is never free for the taking or for the giving.
-->--''TabletopGame/VampireTheMasquerade - Clanbook: Baali''

->[[spoiler: Lilith]]. Screech owl. [[SealedEvilInACan I bind you]]. By [[IHaveManyNames your seventeen names]], I bind you. By your hidden eighteenth name, I bind you. '' '''Ki-sikil-lil-la-ke,''' '' I bind you!
-->--'''The Nephilim''', ''VideoGame/TheSecretWorld''

-> The magic of Egypt that was knew the names as the essence of the world, in a way few have ever known it. To know the truth of a name, was to be able to command gods.
-->--'''Sword Aariel''', ''Literature/ANetOfDawnAndBones''