| Work | Description | Characters |
|---|---|---|
| My Sweet Tyrant | Japanese manga series | 1 |
| My Youth Romantic Comedy Is Wrong, As I Expected | Japanese light novel series | 5 |
| Nabucco | opera written by Giuseppe Verdi, Italian composer | 1 |
| Nacho Libre | 2006 film by Jared and Jerusha Hess | 1 |
| Nadia: The Secret of Blue Water | television anime directed by Shinji Higuchi and Hideaki Anno | 1 |
| Nana | 2000 manga series by Ai Yazawa | 7 |
| Nanbaka | Manga series by Shō Futamata | 1 |
| Napoleon Dynamite | 2004 film by Jared Hess | 5 |
| Naruto | Japanese anime television series | 6 |
| Naruto | Japanese media franchise | 33 |
| Naruto | Japanese manga series | 5 |
| Naruto: Shippūden | Japanese anime television series | 3 |
| National Treasure | 2004 film directed by Jon Turteltaub | 1 |
| National Treasure: Book of Secrets | 2007 film directed by Jon Turteltaub | 1 |
| Natsume's Book of Friends | Japanese anime television series | 1 |
| Natsume's Book of Friends | Japanese manga series | 1 |
| Natsume's Book of Friends Movie | 2018 anime film by Takahiro Ōmori | 1 |
| Natsu no Arashi! | Japanese anime television series | 1 |
| Natsu no Arashi! | Japanese manga series | 1 |
| Nausicaä of the Valley of the Wind | 1984 film directed by Hayao Miyazaki | 1 |
| Nausicaä of the Valley of the Wind | Japanese manga series | 1 |
| NCIS | American military drama/police procedural fictional television series | 2 |
| Needy Streamer Overload | 2022 video game | 2 |
| Nemesis | Book by Jeanne Kalogridis, from 2002 | 5 |
| Neon Genesis Evangelion | Japanese science-fiction animation series | 10 |
| Neon Genesis Evangelion | manga by Yoshiyuki Sadamoto | 1 |
| Neon Genesis Evangelion: Death & Rebirth | 1997 film directed by Hideaki Anno | 1 |
| Nepenthe | 7th Episode of Star Trek: Picard | 3 |
| Never Go Back | Novel by Lee Child | 1 |
| Never Say Never Again | 1983 James Bond film directed by Irvin Kershner | 1 |
| New Game! | Japanese manga series | 1 |
| New Game! | Japanese anime television series | 1 |
| New Girl | American sitcom | 4 |
| New Hell Girl | Japanese manga series | 1 |
| New Mutants | 1983 comic book series | 1 |
| New Super Luigi U | 2013 platform game | 2 |
| New Super Mario Bros. | side-scrolling platform video game developed by Nintendo for the Nintendo DS in 2006 | 1 |
| New Super Mario Bros. 2 | 2012 side-scroller platform video game developed by Nintendo | 1 |
| New Super Mario Bros. U | 2012 platform video game | 1 |
| New Super Mario Bros. U Deluxe | 2019 video game for Nintendo Switch | 1 |
| New Testament | second division of the Christian biblical canon | 2 |
| Nickelodeon All-Star Brawl | 2021 video game developed by Fair Play Labs and Ludosity | 1 |
| Nicktoons: Attack of the Toybots | 2007 video game | 1 |
| Nicktoons: Freeze Frame Frenzy | 2004 video game | 1 |
| Nicktoons Unite! | 2005 video game | 1 |
| NieA_7 | Japanese anime television series | 1 |
| Nier | 2010 video game | 6 |
| NieR: Automata | 2017 action role-playing video game | 9 |
| Nightcrawler | 2014 film | 1 |
| Night School | 2016 novel by Lee Child | 1 |
| Nightshade | Book by Laurell K. Hamilton, from 1992 | 5 |
| Nigrinus | work by Lucian | 1 |
| Nihon Shoki | 8th century book of classical Japanese history | 1 |
| Nineteen Eighty-Four | dystopian novel written by George Orwell | 2 |
| Ninja Turtles: The Next Mutation | American 1997–1998 live-action television series | 1 |
| Nisekoi | Japanese manga series | 2 |
| Nisekoi | Japanese anime television series | 2 |
| Nixon in China | opera by John Adams | 1 |
| Noblesse | Japanese anime television series | 1 |
| Nobody Knows the Tribbles I've Seen | comic | 8 |
| Nobunaga Concerto | Japanese manga series, television anime, a live-action television series, and a live-action film | 1 |
| No Country for Old Men | 2007 film directed by Ethan and Joel Coen | 3 |
| No Country for Old Men | novel by Cormac McCarthy | 1 |
| No Game No Life | 2014 anime series | 2 |
| No Good Deed | 2017 film by David Leitch | 1 |
| No Matter How I Look at It, It's You Guys' Fault I'm Not Popular! | Japanese manga series | 1 |
| No Matter How I Look at It, It's You Guys' Fault I'm Not Popular! | Japanese anime television series | 1 |
| No! No! A Thousand Times No!! | 1935 film by Dave Fleischer | 1 |
| Noragami | Japanese anime television series | 2 |
| Noragami | Japanese manga series by Adachitoka | 2 |
| Norse mythology | body of mythology of the North Germanic people stemming from Norse paganism and continuing after the Christianization of Scandinavia and into the Scandinavian folklore of the modern period | 1 |
| …Nor the Battle to the Strong | episode of Star Trek: Deep Space Nine (S5 E4) | 9 |
| Northern Lights | 1995 novel by Philip Pullman | 2 |
| North Star | episode of Star Trek: Enterprise (S3 E9) | 4 |
| Nosferatu | 1922 film directed by F. W. Murnau | 1 |
| Nosferatu | 2024 film directed by Robert Eggers | 1 |
| Notes from Underground | 1864 novella by Fyodor Dostoyevsky | 1 |
| Nothing to Lose | twelfth book in the Jack Reacher series by Lee Child | 1 |
| No Time to Die | James Bond film by Cary Joji Fukunaga scheduled for 2021 | 1 |
| Not Now | 1936 film by Dave Fleischer | 1 |
| Numbers | fourth book of the Bible | 3 |
| Nyan Koi! | Japanese manga series | 1 |
| Nyan Koi! | Japanese anime television series | 1 |
| Obi-Wan Kenobi | American streaming television series | 2 |
| Objective: Bajor | Book by John Peel, from 1996 | 8 |
| Objects in Space | episode of Firefly (S1 E14) | 2 |
| Occupe-toi d'Amélie! | play written by Georges Feydeau | 1 |
| Ocean's 11 | 1960 heist film directed by Lewis Milestone | 1 |
| Ocean's Eleven | 2001 film by Steven Soderbergh | 1 |
| Ocean's Thirteen | 2007 film by Steven Soderbergh | 1 |
| Ocean's Twelve | 2004 film directed by Steven Soderbergh | 1 |
| Octopath Traveler | 2018 role-playing video game | 4 |
| Octopussy | 1983 film by John Glen | 1 |
| Odyssey | epic poem attributed to Homer | 9 |
| Oedipus Rex | ancient Greek tragedy by Sophocles | 2 |
| Oh My Goddess! | Japanese manga series | 2 |
| Oh My Goddess! | Japanese anime television series | 2 |
| Olaf's Frozen Adventure | 2017 animated short film | 3 |
| Old Santeclaus with Much Delight | anonymous 1821 Christmas poem | 1 |
| Old Wounds | Book by Christie Golden, from 2004 | 14 |