| Work | Description | Characters |
|---|---|---|
| Logan | 2017 film by James Mangold | 4 |
| Log Horizon | Japanese light novel series | 1 |
| Log Horizon | Japanese anime television series | 1 |
| Lois & Clark: The New Adventures of Superman | television series | 3 |
| Loki | American streaming television series | 3 |
| Lolani | 2014 episode of Star Trek Continues | 1 |
| Lolita | novel by Vladimir Nabokov | 2 |
| Lone Ranger | 1933-1954 radio program | 1 |
| Looking for Alaska | drama television miniseries | 1 |
| Looking for Alaska | 2005 novel by John Green | 1 |
| Look Who's Purging Now | episode of Rick and Morty (S2 E9) | 1 |
| Looney Tunes | American series of animated comedy short films produced by Warner Bros. | 3 |
| Lord Edgware Dies | book | 1 |
| Lord of the Flies | 1954 novel by William Golding | 1 |
| Losing the Peace | Book by William Leisner, from 2009 | 13 |
| Lost | American television series | 5 |
| Lost in Space | 1998 film by Stephen Hopkins | 1 |
| Lost in Space | 2018 American science fiction television series | 1 |
| Lost in Space | 1965–68 American science fiction television series | 1 |
| Lost Souls | Book by David Alan Mack, from 2008 | 15 |
| Lotus Land Story | 1997 video game; fourth video game of the Touhou Project, a series of bullet hell shoot-em-ups | 1 |
| Love | 1927 film by Edmund Goulding | 1 |
| Love Live! | Japanese multimedia franchise | 11 |
| Love Live! | Japanese manga series | 9 |
| Love Live! School Idol Festival | discontinued 2013 video game | 3 |
| Love Live! School Idol Paradise | 2014 group of music video games consisting of 3 volumes | 1 |
| Love Live! School Idol Project | Japanese anime television series | 1 |
| Love Live! Sunshine!! | Japanese multimedia project | 2 |
| Love Live! The School Idol Movie | 2015 film | 1 |
| Love Me, Love Me Not | 2020 Japanese animated film | 1 |
| Love Tyrant | Japanese anime television series | 1 |
| Love Tyrant | Japanese manga series | 1 |
| Lucifer | American television series | 4 |
| Lucky Star | Japanese anime television series | 1 |
| Lucky Star | Japanese manga series | 1 |
| Luigi | video game series | 1 |
| Luigi's Mansion | 2001 action-adventure video game developed by Nintendo Entertainment Analysis & Development | 2 |
| Luigi's Mansion 3 | 2019 action-adventure video game | 1 |
| Luigi's Mansion: Dark Moon | 2013 action-adventure video game | 1 |
| Lupin | 2021 French television series | 1 |
| Lupin III | manga written by Monkey Punch | 3 |
| Lupin III | 1971-72 Japanese anime television series | 1 |
| Lupin III | media franchise | 3 |
| Lupin III H | Japanese manga series | 1 |
| Lupin the 3rd vs Detective Conan | 2009 film directed by Hajime Kamegaki | 1 |
| Lupin the 3rd vs. Detective Conan: The Movie | 2013 animated feature film directed by Hajime Kamegaki | 1 |
| Lupin the IIIrd: Daisuke Jigen's Gravestone | 2014 film by Takeshi Koike | 1 |
| Lupin the IIIrd: Goemon Ishikawa's Spray of Blood | 2017 film by Takeshi Koike | 1 |
| Lupin the Third Part 5 | the sixth anime adaptation of the Lupin the Third Franchise | 1 |
| Lupin the Third Part IV | fourth tv serie based on Lupin The Third, entirely set in Italy | 3 |
| Lupin the Third: The Woman Called Fujiko Mine | anime series directed by Sayo Yamamoto | 1 |
| Macbeth | play by William Shakespeare | 2 |
| MacGyver | American television series (1985-1992) | 1 |
| MacGyver | American television series (2016-2021) | 1 |
| Mad | 2010-2013 animated American TV comedy series | 4 |
| Madagascar | 2005 American computer-animated comedy film | 1 |
| Madagascar 3: Europe's Most Wanted | 2012 American computer-animated comedy film | 1 |
| Madagascar: Escape 2 Africa | 2008 American computer-animated comedy film | 1 |
| Made in Abyss | Japanese manga series | 3 |
| Made in Abyss | Japanese anime television series | 2 |
| Madly Madagascar | 2013 film by David Soren | 1 |
| Mad Max | 1979 Australian dystopian action film directed by George Miller | 1 |
| Mad Max 2 | 1981 Australian post-apocalyptic action film directed by George Miller | 1 |
| Mad Max Beyond Thunderdome | 1985 Australian post-apocalyptic action adventure film | 2 |
| Mad Max film series | media franchise | 1 |
| Mad Max: Fury Road | 2015 Australian post-apocalyptic action film directed by George Miller | 1 |
| Mad Men | American period drama television series | 7 |
| Madness of Odysseus | episode in greek mythology | 1 |
| Magi: Adventure of Sinbad | Japanese manga series | 1 |
| Magia Record | Japanese anime television series | 1 |
| Magia Record | Japanese role-playing video game | 1 |
| Magical Diary | video game | 1 |
| Magical Girl Raising Project | Japanese manga series | 7 |
| Magical Girl Raising Project | Japanese anime television series | 7 |
| Magic Kaito | Japanese manga series | 1 |
| Magic: The Gathering | trading card game | 1 |
| Magi: The Labyrinth of Magic | Japanese manga | 1 |
| Magi: The Labyrinth of Magic | Japanese anime television series | 2 |
| Magnolia | 1999 film by Paul Thomas Anderson | 1 |
| Mahabharata | one of the two major Sanskrit epics of ancient India | 6 |
| Maid Sama! | Japanese anime television series | 1 |
| Maid Sama! | 2010 manga series by Hiro Fujiwara | 2 |
| Maison Ikkoku | manga series by Rumiko Takahashi | 1 |
| Make Me | book by Lee Child | 1 |
| Making Friends | 1936 film by Dave Fleischer | 1 |
| Making Stars | 1935 animated film directed by Dave Fleischer | 1 |
| Malcolm in the Middle | American television sitcom | 6 |
| Maleficent | 2014 film directed by Robert Stromberg | 1 |
| Maleficent: Mistress of Evil | 2019 film by Joachim Rønning | 1 |
| Mallrats | 1995 film directed by Kevin Smith | 1 |
| Mamma Mia! | 2008 film directed by Phyllida Lloyd | 1 |
| Mamma Mia! | stage musical based on ABBA's music | 1 |
| Mamma Mia! Here We Go Again | 2018 American musical film directed by Ol Parker | 1 |
| Manhunter | 1986 film by Michael Mann | 2 |
| Man of Steel | 2013 superhero film directed by Zack Snyder | 2 |
| Maoyu | Japanese light novel series | 1 |
| Maps and Legends | 2nd Episode of Star Trek: Picard | 8 |
| Maquia: When the Promised Flower Blooms | 2018 Japanese animated film | 1 |
| Marcella | British television series | 1 |
| Marie Curie: The Courage of Knowledge | 2016 film by Marie-Noëlle Sehr | 1 |