History Main / OnlyKnownByInitials

* JC Chasez of Music/{{NSYNC}}. His real name is Joshua, but during his audition for ''The New Mickey Mouse Club'', there was another cast member named Josh, so he was dubbed "JC" and has gone by it since.

* D. B. (Daniel Bernard) Sweeney

* [[Creator/JKSimmons J. K. (Jonathan Kimble) Simmons]], famous for his portrayal of [[Film/SpiderManTrilogy J. Jonah Jameson Jr]].

* J. P. (John Pierpont) Morgan

* P. T. (Phineas Taylor) Barnum

* S. E. (Sarah Elizabeth) Cupp
* T. K. (Thomas Kent) Carter
* W. C. Fields - real name William Claude Dukenfield

** George R.R. (Raymond Richard) Martin - creator of ''Literature/ASongOfIceAndFire''.

** GRRM (George R[aymond]. R[ichard]. Martin) - creator of ''Literature/ASongOfIceAndFire''.

%%* ''VideoGame/ResidentEvilCodeVeronica'' has D.I.J., a [[NiceMice mouse]] who is intelligent enough to keep a {{diary}}.

* B.A. Baracus on ''Series/TheATeam'' (played by Creator/MrT). We know from the pilot episode that his given first name is "Bosco", and that "B.A." is shorthand for his nickname, "Bad Attitude", but eventually it is revealed that his full name is "Bosco Albert Baracus".
** Also from ''Series/TheATeam'': H. M. ("Howling Mad") Murdock.

* B.A. Baracus on ''Series/TheATeam'' (played by Mr. T) We know from the pilot ep. that his given first name is "Bosco", and that "B.A" is shorthand for his nickname, "Bad Attitude", but eventually it is revealed that his full name is "Bosco Albert Baracus."

* D.B.Russell on ''Series/{{CSI}}''. Probably due to his first name being [[EmbarrassingFirstName Diebenkorn]].

* ''Series/FullHouse'' has Donna Jo, who has the nickname of "DJ."*

* kd lang. Although in some lyrics to her songs she refers to her actual first name (ex. "The Mind of Love": ''"Where is your head, Kathryn?"'')

* Wrestling/AJStyles is a famous wrestler who has a succesfull career, first on indies, Wrestling/RingOfHonor and Wrestling/{{TNA}}, to star actually in Wrestling/{{WWE}}. If well it's his nickname, the AJ is for his real name, Allen Jones.

** W. E. B. Griffin, American writer of military and detective fiction, was born William Edmund Butterworth III. (He also wrote under [[IHaveManyNames 11 other pseudonyms]] ''and'' three variations of his real name.

** [[Creator/JKRowling J.K. (Joanne) Rowling]] - she indeed used initials to hide her sex, she doesn't actually have a middle name. However, the "K" in her name does stand for "Kathleen", which she took from her paternal grandmother's name.

* JM J Bullock, who is only JM J because Jim J Bullock was already registered with the [[UsefulNotes/UnionsInHollywood Screen Actors Guild]]

* K. C. (Kristina Cassandra) Concepcion, a Filipino actor

* Creator/MNightShyamalan - real name Manoj Shyamalan; the "Night" was just added [[RuleOfCool to sound cool]].

* Wrestling companies are/were generally referred to by their initials. [[Wrestling/{{WWE}} WWF/E]] (World Wrestling Federation/Entertainment), Wrestling/{{WCW}} (World Championship Wrestling), Wrestling/{{ECW}} (Eastern/Extreme Championship Wrestling), [[Wrestling/AmericanWrestlingAssociation AWA]] (American Wrestling Association), [[Wrestling/UniversalWrestlingFederation UWF]] (Universal Wrestling Federation), [[Wrestling/ImpactWrestling TNA]] (Total Nonstop Action), [[Wrestling/RingOfHonor ROH]] (Ring of Honor), [[Wrestling/ProWrestlingGuerilla PWG]] (Pro Wrestling Guerrilla), ...

* J. J. (Justin James) Watt, superstar NFL defensive lineman. Not to mention his younger brother T. J. (Trent Jordan), superstar NFL linebacker.

* Subverted with former professional basketball player and coach K. C. Jones. "K.C." ''is'' his real name.

* There're many sportsmen that use this as nickname, various of them from baseball (A. J. Burnett and A. J. Pierzynski), American football (A. J. Haglund and A. J. Hawk), race drivers (A. J. Allmendinger and A. J. Foyt) and basketball (A. J. Price, and UsefulNotes/MichaelJordan is usually known as MJ).

* CC (Carsten Charles) Sabathia - retired pitcher for several MLB teams, most notably the New York Yankees. Unlike most examples of this trope, he chooses not to use periods.

* There're many sportsmen that this as nickname, various of them from baseball (A. J. Burnett and A. J. Pierzynski), American football (A. J. Haglund and A. J. Hawk), race drivers (A. J. Allmendinger and A. J. Foyt) and basketball (A. J. Price, and UsefulNotes/MichaelJordan is usually known as MJ).

* C. C. (Carsten Charles) Sabathia - pitcher for the New York Yankees

* J. J. (Justin James) Watt, superstar NFL defensive lineman

* P. K. (Pernell Karl) Subban, defenseman for the NHL's New Jersey Devils (and previously the Nashville Predators and Montreal Canadiens), who [[AcronymConfusion happens to share his initials]] with an ice hockey special team (penalty kill) to the amusement of color commentators.

** D. J. (Donald James) [=MacHale=], director and author of ''Literature/ThePendragonAdventure'' Series and the ''Literature/MorpheusRoad'' trilogy.
** E. B. (Elwyn Brooks) White, author of ''Literature/CharlottesWeb'' and ''Literature/StuartLittle''.

* JC Chasez of Music/{{NSYNC}}.

* ''ComicStrip/AJAndMagnus'' is about a young boy and his dog, a modern revision of ''ComicStrip/CalvinAndHobbes'' but with [[HasTwoMommies two fathers]]. We find out his full name [[https://www.gocomics.com/aj-and-magnus/2016/04/09 in 2016]], via FullNameUltimatum[[note]]It's "Alexander Johnathan Parker"[[/note]]. We find out later his named after [[spoiler: both of his biological parents. His bio mom's name was "Alex"]]

* ''ComicStrip/AJAndMagnus'' is about a young boy and his dog, a modern revision of ''ComicStrip/CalvinAndHobbes'' but with [[HasTwoMommies two fathers]]. It was unknown AJ means, but was implied that is for his two first names. In March 2018, this was confirmed, when we find out his full name is [[spoiler: Alexander Jonathan Parker.]]

* ''ComicStrip/AJAndMagnus'' is about a young boy and his dog, a modern revision of ''ComicStrip/CalvinAndHobbes'' but with [[HasTwoMommies two fathers]]. It was unknown AJ means, but is implied that is for his two first names. In March 2018, this was confirmed, when we find out his full name is [[spoiler: Alexander Jonathan Parker.]]

* ''ComicStrip/AJAndMagnus'' is about a young boy and his dog, a modern revision of ''ComicStrip/CalvinAndHobbes'' but with [[HasTwoMommies two fathers]]. It is unknown [[OnlyKnownByTheirNickname what AJ means]], but is implied that is for his two first names.

** [[http://en.wikipedia.org/wiki/M.A.R._Barker M. A. R. (Muhammad Abd-al-Rahman) Barker]], creator of the ''[[http://en.wikipedia.org/wiki/Tekumel Empire of the Petal Throne/Tekumel]]'' TabletopRPG setting.
** J. F. (Jesse Franklin) Bone
** [[Creator/GKChesterton G. K. (Gilbert Keith) Chesterton]]
** [[Creator/EECummings E. E. (Edward Estlin) Cummings]]
** [[Creator/TSEliot T. S. (Thomas Stearns) Eliot]]
** J. B. S. (John Burdon Sanderson) Haldane

** [[Creator/HPLovecraft H. P. (Howard Phillips) Lovecraft]]
** [[Creator/JRRTolkien J. R. R. (John Ronald Reuel) Tolkien]]
** A. E. (Alfred Elton) van Vogt
** [[Creator/PGWodehouse P. G. (Pelham Grenville) Wodehouse]]
** [[Creator/AAMilne A. A. (Alan Alexander) Milne]]

** [[Creator/HGWells H. G. (Herbert George) Wells]]

** S. P. (Sterner St. Paul) Meek
** S. W. Erdnase, author of ''The Expert at the Card Table''. Bonus points for Erndase's true identity remaining a mystery to this day.
** E. B. (Elwyn Brooks) White, author of ''Literature/CharlottesWeb'' and ''Literature/StuartLittle''.
** Creator/SPSomtow, Thai-American sci-fi writer and composer, is a subversion: Somtow is actually his given name, and his full name is Somtow Papinian Sucharitkul.

** [[Literature/TheHouseOfNight P.C. (Phyllis Christine) Cast]]
** J. M. Dillard - really Jeanne Dillard Kalogridis

** S. E. (Susan Eloise) Hinton of ''Literature/TheOutsiders'' fame.

** [[Creator/CLMoore C. L. (Catherine Lucille) Moore]]
** [[Creator/JKRowling J.K. (Joanne) Rowling]] - she indeed used initials to hide her sex, she doesn't actually have a middle name. However, the "K" in her name does stand for "Kathleen", which she took from her paternal grandmother's name.

** C. V. (Cicely Veronica) Wedgwood - historian
** [[Creator/CJCherryh C. J. (Carolyn Janice) Cherryh]], who also added a gratuitous 'h' to her last name to make it seem less feminine.
** [[Creator/KAApplegate K. A. (Katherine Ann) Applegate]], author of ''Literature/{{Animorphs}}'', ''Literature/{{Everworld}}'' and ''Literature/{{Remnants}}''. More specifically, K. A. is used when Katherine and her husband Creator/MichaelGrant write together. For her other books, she is credited as Katherine Applegate.

* P. T. (Phineas Taylor) Barnum
* JM J Bullock, who is only JM J because Jim J Bullock was already registered with the [[UsefulNotes/UnionsInHollywood Screen Actors Guild]]
* T. K. (Thomas Kent) Carter
* J. P. (John Pierpont) Morgan
* [[Creator/CCHPounder C. C. H. (Carol Christine Hilaria) Pounder]], actress

* G. W. (George William) Bailey, actor

* Creator/MNightShyamalan - real name Manoj Shyamalan; the "Night" was just added [[RuleOfCool to sound cool]].

* [[Creator/OJSimpson O. J. (Orenthal James) Simpson]], athlete
* S. E. (Sarah Elizabeth) Cupp
* W. C. Fields - real name William Claude Dukenfield
* P. Z. (Paul Zachary) Myers
* British film director J. Blakeson
* Back when Lord Baden-Powell formed the Boy Scouts, a bunch of girls wanted in on the fun too. But they couldn't sign up using their real names because they were, you know, girls. So they signed up using their initials (and [[SweetPollyOliver dressed like boys]] when they were accepted in.) Eventually, the girls got their own group, the Girl Scouts.

* J. T. (James Thomas Patrick) Walsh, character actor.
* UsefulNotes/{{Indycar}} racing has had a few such as A.J. Foyt, A.J. Allmendinger, and J.R. Hildebrand.
* D. B. (Daniel Bernard) Sweeney

* [[Creator/DWGriffith D. W. (David Wark) Griffith]]
* Subverted with former professional basketball player and coach K. C. Jones. "K.C." ''is'' his real name.
* Inverted with actress Creator/MaggieQ. "Q" stands for "Quigley".
* Filipino actors K. C. (Kristina Cassandra) Concepcion and J. C. (John Carlo) de Vera
* Creator/BrigitteBardot: If you said ''B.B.'' in the Fifties and Sixties everyone knew you were referring to her.

* D. L. (Darryl Lynn) Hughley, actor, comedian and political commentator

* J. J. (Justin James) Watt, superstar NFL defensive lineman
* J. C. (James Cash) Penney (Jr.), founder of the American department store chain now doing business as [=JCPenney=]
* W.E.B. (William Edward Burghart) [=DuBois=], sociologist and co-founder of the NAACP.
* Madame C.J. Walker (took her husband's name: Charles James Walker; real name Sarah Breedlove), fashion designer, social activist.
* W.C. (William Christopher) Handy, Father of the Blues.
* There're many sportsmen that this as nickname, various of them from baseball (A. J. Burnett and A. J. Pierzynski), American football (A. J. Haglund and A. J. Hawk), race drivers (A. J. Allmendinger and A. J. Foyt) and basketball (A. J. Price, and UsefulNotes/MichaelJordan is usually known as MJ).

* Famous US President UsefulNotes/AndrewJackson was also known as A.J. Also, there're other politicians with this nickname like Andrew Johnson.
* Jill Price, the first diagnosed [[PhotographicMemory hyperthymestic]], was originally identified as "AJ."
* Creator/LouisCK, born Louis Székely (pronounced "SEE-kay").
* Creator/BJWard, a famous voice actress known for her papers on [[WesternAnimation/ScoobyDoo Velma Dinkley]], [[WesternAnimation/TheFlintstones Betty Rubble]] and WesternAnimation/JanaOfTheJungle, uses the "BJ" for her two first names: Betty Jean.

%%* DJ (Donna Jo) Margaret Tanner from ''Series/FullHouse''.

* ''Series/FullHouse'' has Donna Jo, who has the nickname of "DJ."

* Jill Price, the first diagnosed hyperthymestic, was originally identified as "AJ."

%%* J.L. (Jason [[EmbarrassingMiddleName Lochenbar]]) [=McCabe=], the titular Fatman from ''Series/JakeAndTheFatman''.

* Creator/LouisCK, born Louis Székely.

[[folder:Live Action TV]]

** GRRM (George R[aymond]. R[ichard]. Martin) - creator of ''Series/GameOfThrones''.

* Also subverted with BKR, the villain of ''Literature/RodAlbrightAlienAdventures''. This is his whole name, and none of the other aliens seems to think it odd.

%%* M.J. (Mary Jane) Watson from "ComicBook/SpiderMan"

* Actress A.J. Cook has the A.J. for Andrea Joy, her two first names. If well she appears in various movies like ''Film/TheVirginSuicides'' and ''Film/FinalDestination2'', she's more known for her roles in TV series like ''Series/TruCalling'' and ''Series/CriminalMinds'', her most known role as the special agent Jennifer "JJ" Jareau.

* The rock pop duet Music/AlyAndAJ, a [[BandOfRelatives sister duo]] in which one of them, AJ Michalka, has the AJ for Amanda Joy.

%%* Wrestling companies are/were generally referred to by their initials. WWF/WWE, WCW, ECW, AWA, UWF, TNA, ROH, PWG, ...

%%* Wrestling/AJStyles (Allen Jones, his real name)
%%* Wrestling/JimRoss, who became "Good Ol' JR" when he came to the Wrestling/{{WWF}}

* Wrestling/AJStyles is a famous wrestler who has a succesfull career, first on indies, Ring of Honor and Wrestling/{{TNA}}, to star actually in Wrestling/{{WWE}}. If well it's his nickname, the AJ is for his real name, Allen Jones.
* Wrestling/AJLee (not related with Styles, by the way) was a female wrestler famous for being in WWE between 2009 and 2015 and she's the actual wife of Wrestling/CMPunk. Just as Styles, the AJ is her real name, but in this case her 2 first names: April Jeanette.

* Creator/MNightShyamalan - real name Manoj Shyamalan; the "Night" was just added to sound cool.

* O. J. (Orenthal James) Simpson

* J. J. (Jeffrey Jacob) Abrams, current director of the ''Film/StarTrek2009'' and ''Franchise/StarWars'' movie franchises.

* Inverted with actress Maggie Q. "Q" stands for "Quigley".

* J. K. (Jonathan Kimble) Simmons, famous for his portrayal of J. Jonah Jameson Jr.

* There're many sportsmen that this as nickname, various of them from baseball (A. J. Burnett and A. J. Pierzynski), American football (A. J. Haglund and A. J. Hawk), race drivers (A. J. Allmendinger and A. J. Foyt) and basketball (A. J. Price, and Creator/MichaelJordan is usually known as MJ).

* Louis C. K., born Louis Székely.

** KC Guthrie. Unlike JT, KC's full name has never been revealed, but {{Fanon}} is that it's KirkCameron Guthrie.

* DJ Bonebrake, drummer for LA punk band, [[Music/XUSBand X]].

* G.T. Overley, BadassDriver of the titular hero team in ''TabletopGame/{{Crimestrikers}}''. She uses her initials because she's embarassed by her real name, [[EmbarrassingFirstName Gretchen]] [[EmbarrassingMiddleName Tallulah]].

** GRRM (George R[aymond]. R[ichard]. Martin) - creator of Series/GameOfThrones