| Work | Description | Characters |
|---|---|---|
| Kung Fu: The Next Generation | episode of CBS Summer Playhouse | 1 |
| Kuroko's Basketball | Japanese manga and anime series | 5 |
| Kyo Kara Maoh! | Japanese light novel series | 1 |
| La Belle Sauvage | 2017 novel by Phillip Pullman | 1 |
| Labyrinth | 1986 film directed by Jim Henson | 1 |
| La Comédie humaine | multi-volume collection of novels and stories | 2 |
| Lady and the Tramp | 1955 animated film by Hamilton Luske, Clyde Geronimi and Wilfred Jackson | 1 |
| Lady Bird | 2017 film by Greta Gerwig | 3 |
| Lady of the Lake | novel by Andrzej Sapkowski | 7 |
| Laid-Back Camp | Japanese anime television series | 1 |
| Laid-Back Camp | Japanese drama television series | 1 |
| Laid-Back Camp | Japanese manga series | 1 |
| La Légende et les Aventures héroïques, joyeuses et glorieuses d'Ulenspiegel et de Lamme Goedzak au pays de Flandres et ailleurs | book by Charles De Coster | 1 |
| Lapis Re:Lights | Japanese anime television series | 1 |
| Lapis Re:Lights | Japanese media franchise | 1 |
| Lara Croft: Tomb Raider | 2001 film by Simon West | 1 |
| Lara Croft: Tomb Raider – The Cradle of Life | 2003 film by Jan de Bont | 1 |
| Last Full Measure | Book by Michael A. Martin and Andy Mangels, from 2006 | 5 |
| L.A. Takedown | 1989 television film directed by Michael Mann | 1 |
| La Terre Promise | oratorio in three parts by Jules Massenet to a French libretto by the composer based on the French translation of the Vulgate by Silvestre de Sacy | 1 |
| Laughing Under the Clouds | Japanese supernatural manga series by Karakara-Kemuri and anime television series based on the manga | 1 |
| Law & Order | American police procedural and legal drama television series | 1 |
| Law & Order: Special Victims Unit | American police procedural crime drama television series | 2 |
| League of Legends | 2009 multiplayer online battle arena video game | 73 |
| Le Dep | 2015 film by Sonia Bonspille Boileau | 1 |
| Legacies | 2018 American supernatural drama television series | 1 |
| Legacy | 1991 science fiction novel by Michael Jan Friedman | 5 |
| Legacy of Kain | video game series | 1 |
| Legacy of Kain: Defiance | 2003 video game | 1 |
| Legacy of Kain: Soul Reaver | 1999 video game | 1 |
| Legacy of Lunatic Kingdom | 2015 video game | 1 |
| Legally Blonde | book by Amanda Brown | 1 |
| Legally Blonde | 2001 film by Robert Luketic | 1 |
| Legally Blonde 2: Red, White & Blonde | 2003 film by Charles Herman-Wurmfeld | 1 |
| Legend of the Galactic Heroes | novel by Yoshiki Tanaka | 5 |
| Legend of the Galactic Heroes | Japanese original video animation series | 1 |
| Legend of the Galactic Heroes | manga series by Ryu Fujisaki | 1 |
| Legend of the Seeker | television series | 1 |
| Legends | episode of Avatar: The Last Airbender (S1 E8) | 1 |
| Legends of Runeterra | 2020 video game | 3 |
| Legends of the Superheroes | television series | 2 |
| Legends of Tomorrow | American television series | 6 |
| Legion of Super Heroes | American animated television series | 2 |
| Lego Batman 2: DC Super Heroes | 2012 video game | 6 |
| Lego Batman 3: Beyond Gotham | 2014 video game | 5 |
| Lego Batman: The Movie – DC Super Heroes Unite | 2013 film by Jon Burton | 3 |
| Lego DC Comics: Batman Be-Leaguered | 2014 animated short film | 1 |
| Lego DC Comics Super Heroes: Justice League: Attack of the Legion of Doom | 2015 film | 3 |
| Lego DC Comics Super Heroes: Justice League: Cosmic Clash | 2016 film | 4 |
| Lego DC Comics Super Heroes: Justice League: Gotham City Breakout | 2016 film | 5 |
| Lego DC Comics Super Heroes: Justice League vs. Bizarro League | 2015 animated film directed by Brandon Vietti | 3 |
| Lego DC Comics Super Heroes: The Flash | 2018 film directed by Ethan Spaulding | 1 |
| Lego DC Super-Villains | 2018 video game | 1 |
| Lego Dimensions | 2015 video game | 3 |
| Lego Marvel's Avengers | 2016 video game | 1 |
| Lego Marvel Super Heroes | 2013 video game | 3 |
| Lego Marvel Super Heroes 2 | 2017 video game | 1 |
| Lego Star Wars III: The Clone Wars | 2011 video game | 1 |
| Lego Star Wars: The Force Awakens | 2016 video game | 1 |
| Lego Star Wars: The Freemaker Adventures | Computer-animated television series | 7 |
| Lego Star Wars: The Video Game | 2005 video game | 1 |
| Lego The Incredibles | 2018 Lego-themed video game based on The Incredibles | 2 |
| Lemony Snicket's A Series of Unfortunate Events | 2004 adventure film directed by Brad Silberling | 4 |
| Le Morte d'Arthur | 1485 reworking of existing tales about King Arthur by Sir Thomas Malory | 2 |
| Lenin in Poland | 1966 film by Sergei Yutkevich | 1 |
| Léon: The Professional | 1994 film by Luc Besson | 1 |
| Leroy & Stitch | 2006 animated TV film concluding Lilo & Stitch: The Series | 4 |
| Les Dix Commandements | musical by Élie Chouraqui and Pascal Obispo | 1 |
| Les Liaisons dangereuses | 1782 epistolary novel by Pierre Choderlos de Laclos | 2 |
| Les Misérables | musical, premiered in French in 1980, in English in 1985 | 1 |
| Les Misérables | 1998 English-language film by Bille August based on the novel of the same name | 1 |
| Les Misérables | 1862 Victor Hugo novel | 9 |
| Le songe d'une nuit d'été | opera by Ambroise Thomas | 1 |
| Lesser Evil | Star Trek novel by Robert Simpson, from 2001 | 15 |
| Lethal Weapon | American series of buddy cop action films | 1 |
| Let's Do It Again | 1975 film by Sidney Poitier | 1 |
| Leviticus | third book of the Bible | 3 |
| L'Histoire de Guillaume le Marechal | 1 | |
| Licence to Kill | 1989 James Bond film directed by John Glen | 1 |
| Life Is Strange | episodic interactive drama graphic adventure video game | 4 |
| Life Is Strange: Before the Storm | 2017 video game | 1 |
| Lightyear | Pixar film planned to be released in 2022 | 1 |
| Like a Dragon | 2007 film by Takashi Miike | 1 |
| Like a Dragon: Prologue | 2006 film by Takashi Miike | 1 |
| Lilo & Stitch | 2002 Disney animated science fiction comedy-drama film written and directed by Chris Sanders and Dean DeBlois | 3 |
| Lilo & Stitch | Disney media franchise about extraterrestrials living with humans on Earth | 1 |
| Lilo & Stitch 2: Stitch Has a Glitch | 2005 direct-to-video Disney animated comedy-drama film directed by Michael LaBash and Tony Leondis | 3 |
| Lilo & Stitch: The Series | 2003 animated TV sequel spin-off of Lilo & Stitch | 4 |
| Lilo & Stitch: Trouble in Paradise | 2002 platform video game tie-in to Lilo & Stitch developed by Blitz Games | 2 |
| Line of Fire | Book by Peter David, from 1993 | 1 |
| list of Charmed books | Wikimedia list article | 6 |
| list of Hunter × Hunter episodes | Wikimedia list article | 1 |
| Little Fires Everywhere | hulu original drama series | 1 |
| Little Nicky | 2000 video game | 1 |
| Little Nobody | 1936 film by Dave Fleischer | 1 |
| Little Red Riding Hood | European fairy tale (ATU 333) | 1 |
| Little Women | novel by Louisa May Alcott | 4 |
| Little Women | 1933 film by George Cukor | 2 |
| Live and Let Die | 1973 film by Guy Hamilton | 1 |
| Live by the Code | Book by Christopher L. Bennett | 2 |