| Work | Description | Characters |
|---|---|---|
| Assassination Classroom | Japanese OVA | 1 |
| Assassination Classroom | Japanese anime television series | 3 |
| Assassination Classroom | 2015 film by Eiichirō Hasumi | 1 |
| Assassination Classroom | Japanese manga series | 3 |
| Assassination Classroom: Graduation | 2016 film by Eiichirō Hasumi | 1 |
| Assassination Classroom the Movie: 365 Days | 2016 anime film by Seiji Kishi | 1 |
| Assassin's Creed | media series based on video games | 6 |
| Assassin's Creed | 2007 video game | 1 |
| Assassin's Creed: Brotherhood | 2010 historical action-adventure open world stealth video game | 1 |
| Assassin's Creed II | 2009 historical fiction action-adventure open world stealth video game | 1 |
| Assassin's Creed II: Discovery | 2009 video game | 1 |
| Assassin's Creed IV: Black Flag | 2013 video game | 1 |
| Assassin's Creed: Revelations | 2011 video game | 1 |
| Assignment: Earth | Comic series | 1 |
| Assignment: Eternity | Book by Greg Cox | 5 |
| Assimilation² | comic book crossover | 4 |
| Assimilation², Issue 1 | Comic issue | 7 |
| Assimilation², Issue 2 | Comic issue | 10 |
| Assimilation², Issue 3 | Comic issue | 12 |
| Assimilation², Issue 4 | Comic issue | 10 |
| Assimilation of the Innocent | Mission in Star Trek: Online | 1 |
| Assumption of Moses | Jewish pseudepigraphical work; purports to be secret prophecies Moses revealed to Joshua; known from a single 6th-century Latin manuscript from the Biblioteca Ambrosiana in Milan; possibly alluded to in Jude 1:9 | 1 |
| A Stitch in Time | fictional biographical novel by Andrew Robinson | 11 |
| Astonishing X-Men | Comic book series | 1 |
| A Streetcar Named Desire | 1947 play by Tennessee Williams | 2 |
| A Study in Scarlet | first Sherlock Holmes novel by Sir Arthur Conan Doyle | 1 |
| Asura's Wrath | video game | 1 |
| A Tale of Two Cities | 1859 novel by Charles Dickens | 2 |
| A Taste of Armageddon | episode of Star Trek: The Original Series (S1 E23) | 6 |
| Atlanta | American television comedy series | 4 |
| Atlantis: Milo's Return | 2003 animated Disney film | 2 |
| Atlantis Station | 1 | |
| Atlantis: The Lost Empire | 2001 animated film directed by Gary Trousdale and Kirk Wise | 2 |
| Atlantis: The Lost Empire | 2001 video game | 2 |
| Atlas Shrugged | 1957 novel by Ayn Rand | 4 |
| Atom Man vs. Superman | 1950 TV serial by Spencer Gordon Bennet | 1 |
| Attack on Titan | anime television series | 17 |
| Attack on Titan | Japanese manga series | 14 |
| Aubrey-Maturin series | series of maritime novels by Patrick O'Brian | 1 |
| Austin Powers | film series | 2 |
| Austin Powers in Goldmember | 2002 American spy comedy film directed by Jay Roach | 2 |
| Austin Powers: International Man of Mystery | 1997 film by Jay Roach | 2 |
| Austin Powers: The Spy Who Shagged Me | 1999 film by Jay Roach | 2 |
| Auto Erotic Assimilation | episode of Rick and Morty (S2 E3) | 1 |
| Avatar | 2009 film directed by James Cameron | 2 |
| Avatar, Book One | Book by S. D. Perry, from 2001 | 12 |
| Avatar, Book Two | Book by S. D. Perry, from 2001 | 14 |
| Avatar Generations | 2022 video game | 1 |
| Avatar Legends: The Roleplaying Game | 2022 tabletop role-playing game | 1 |
| Avatar: The Last Airbender | animated television series | 21 |
| Avatar: The Last Airbender (comics) | comics series | 2 |
| Avatar: The Last Airbender – Imbalance | sixth graphic novel trilogy of Avatar: The Last Airbender | 1 |
| Avatar: The Last Airbender – Katara and the Pirate's Silver | standalone graphic novel | 1 |
| Avatar: The Last Airbender – North and South | Fifth graphic novel trilogy of Avatar: The Last Airbender | 1 |
| Avatar: The Last Airbender - Quest for Balance | 2023 video game | 1 |
| Avatar: The Last Airbender, season 1 | first season of Avatar: The Last Airbender | 2 |
| Avatar: The Last Airbender, Season 1 | first season of Avatar: The Last Airbender (2024) | 2 |
| Avatar: The Last Airbender, season 2 | the second season of The Last Airbender television series | 2 |
| Avatar: The Last Airbender, season 3 | third season of Avatar: The Last Airbender | 2 |
| Avatar: The Last Airbender – Smoke and Shadow | Fourth graphic novel trilogy of Avatar: The Last Airbender | 2 |
| Avatar: The Last Airbender – The Promise | first graphic novel trilogy of Avatar: The Last Airbender | 2 |
| Avatar: The Last Airbender – The Rift | third graphic novel trilogy of Avatar: The Last Airbender | 2 |
| Avatar: The Last Airbender – The Search | second graphic novel trilogy of Avatar: The Last Airbender | 2 |
| Avatar: The Last Airbender (upcoming TV series) | American live-action adventure fantasy streaming television series | 2 |
| Avenger | book by William Shatner | 6 |
| Avengers | 1963 comic book ongoing series | 2 |
| Avengers: Age of Ultron | 2015 superhero film produced by Marvel Studios | 14 |
| Avengers Confidential: Black Widow & Punisher | 2014 film | 1 |
| Avengers: Endgame | 2019 superhero film produced by Marvel Studios | 22 |
| Avengers: Infinity War | 2018 superhero film produced by Marvel Studios | 20 |
| A Very Merry Pooh Year | 2002 film by Jamie Mitchell | 1 |
| A View to a Kill | 1985 James Bond film by John Glen | 1 |
| A Visit from St. Nicholas | 1823 poem by Clement Clarke Moore | 1 |
| A Wanted Man | book by Lee Child | 1 |
| Away | American drama television series | 3 |
| Azumanga Daioh | Japanese manga series | 1 |
| Babes in Toyland | operetta composed by Victor Herbert with a libretto by Glen MacDonough | 1 |
| Baby Be Good | 1935 film by Dave Fleischer | 1 |
| Babylon 5 | American space opera television series created by writer and producer J. Michael Straczynski | 4 |
| Baccano! | Japanese light novel series | 1 |
| Baccano! | Japanese manga series | 1 |
| Baccano! | Japanese anime television series | 1 |
| Back to the Future | animated TV series | 1 |
| Back to the Future | 1985 film by Robert Zemeckis | 1 |
| Back to the Future Part II | 1989 film by Robert Zemeckis | 1 |
| Back to the Future Part III | 1990 film by Robert Zemeckis | 2 |
| Back to the Future: The Ride | Theme park ride | 2 |
| Back to the Future trilogy | 1985-1990 Three films directed by Robert Zemeckis | 5 |
| Back to the Klondike | 1952 Uncle Scrooge comic book story by Carl Barks | 1 |
| Bad Luck and Trouble | book by Lee Child | 1 |
| Bajor: Fragments and Omens | Book by J. Noah Kym | 11 |
| Bakemonogatari | Japanese manga series | 3 |
| Baki the Grappler | 1994 manga series written and illustrated by Keisuke Itagaki | 2 |
| Bakuman | Japanese anime television series | 1 |
| Balance of Power | book by Dafydd ab Hugh | 6 |
| Baldur's Gate 3 | 2023 role-playing video game developed by Larian Studios | 8 |
| Ballad of a Thin Man | Bob Dylan song | 1 |
| Band of Brothers | TV mini-series | 1 |
| BanG Dream! | Japanese anime television series | 1 |
| BanG Dream! Girls Band Party! | mobile game | 1 |