| Kung-Foot | — | TF1 | 26 |
| Kuu Kuu Harajuku | November 1, 2015 | Nickelodeon, Nick Jr. Channel, 10 Comedy | 78 |
| La Linea | 1972 | RAI | 90 |
| Laff-A-Lympics | September 10, 1977 | American Broadcasting Company | 24 |
| Lapitch the Little Shoemaker | 2001 | — | 26 |
| Larryboy: The Cartoon Adventures | March 16, 2002 | — | 4 |
| Lascars | 1998 | Canal+ | — |
| Lastman (TV series) | — | France 4 | 32 |
| Laurel and Hardy | September 10, 1966 | Broadcast syndication | 156 |
| Laverne & Shirley | October 10, 1981 | American Broadcasting Company | 13 |
| Lazor Wulf | April 7, 2019 | Adult Swim, Cartoon Network | — |
| Le incredibili indagini dell'ispettore Nasy | — | Rai 1 | — |
| Le Petit Nicolas | 2008 | M6 | 104 |
| Le Piaf | — | Canal+ | 200 |
| League of Super Evil | March 7, 2009 | YTV | 52 |
| Legends of Bikini Bottom | January 28, 2011 | Nickelodeon | 6 |
| Lego Marvel Avengers: Strange Tails | November 14, 2025 | Disney+ | 2 |
| Lego Nexo Knights | December 18, 2015 | Cartoon Network | 40 |
| Lego Star Wars: Droid Tales | July 6, 2015 | Disney XD | 5 |
| Lego Star Wars: The Freemaker Adventures | June 20, 2016 | Disney XD | 26 |
| Leo & Tig | September 17, 2016 | Carousel, Mult | 78 |
| Leo and Fred | 1984 | — | 26 |
| Let's Go Luna! | November 21, 2018 | TVOKids, PBS Kids, Knowledge Kids | 64 |
| Let's Go Pocoyo! | July 3, 2010 | Clan | 52 |
| Letayushchiye zveri | August 11, 2012 | Carousel, OTV, Самара-ГИС (телеканал), Saint Petersburg, Mult | 44 |
| Lexi & Lottie - Trusty Twin Detectives | 2017 | — | 26 |
| Life with Louie | December 18, 1994 | Fox Broadcasting Company | 39 |
| Lilo & Stitch: The Series | September 20, 2003 | Disney Channel | 65 |
| Lily's Driftwood Bay | May 5, 2014 | Nick Jr. | 100 |
| Linus the Lionhearted | September 26, 1964 | CBS | 39 |
| Little Einsteins | October 9, 2005 | Playhouse Disney, Disney Channel | 67 |
| Little Ellen | September 13, 2021 | — | 20 |
| Little Lulu | December 30, 1944 | — | — |
| Little Mouse on the Prairie | 1997 | Freeform | 26 |
| Little Rosey | September 8, 1990 | American Broadcasting Company | 13 |
| Littlekenny | 2019 | — | 6 |
| Littlest Pet Shop | November 10, 2012 | TF1 | 104 |
| Living with Dad | 2022 | Gulli, Canal J | — |
| Lloyd in Space | February 3, 2001 | American Broadcasting Company | 39 |
| Loggerheads | 1998 | — | 16 |
| Lola & Virginia | March 14, 2006 | Disney Channel, Euskal Telebista | — |
| Looney Tunes Cartoons | May 27, 2020 | HBO Max | 82 |
| Looped | March 2, 2016 | Cartoon Network | 26 |
| Los Trotamúsicos | October 1, 1989 | La 1 | 26 |
| Lou! | April 6, 2009 | M6 | 52 |
| Louie | October 25, 2006 | France 5 | 117 |
| Love Between Fairy and Devil | June 21, 2022 | IQIYI | 24 |
| Love, Death & Robots | March 15, 2019 | Netflix | 26 |
| Lucas Bros. Moving Co. | November 23, 2013 | Fox Broadcasting Company | 17 |
| Lucky Fred | November 1, 2011 | Disney Channel | 52 |
| Lucky Luke | 1983 | France Régions 3 | 26 |
| Lucy, the Daughter of the Devil | October 30, 2005 | Adult Swim, Cartoon Network | 11 |
| Luna Petunia: Return to Amazia | February 2, 2018 | Netflix | — |
| Lupin’s Tales | December 20, 2020 | France 5 | 78 |
| Lyla in the Loop | February 5, 2024 | PBS Kids | — |
| M.A.S.K. | September 16, 1985 | CBS, TF1 | 75 |
| Maca & Roni | March 11, 2021 | KBS 2TV | 54 |
| Mad | September 6, 2010 | Cartoon Network | 103 |
| Mad Jack the Pirate | September 12, 1998 | Fox Broadcasting Company, Fox Kids | 13 |
| Madness Combat | July 25, 2002 | — | — |