| Lele Convenience Store | February 4, 2026 | Bilibili | 10 |
| Lemon Angel Project | March 31, 2006 | — | 13 |
| Leo & Tig | September 17, 2016 | Carousel, Mult | 78 |
| Leo and Fred | 1984 | — | 26 |
| Leo da Vinci | 2019 | Rai Gulp, RaiPlay | 52 |
| Les Aventures de Colargol | 1968 | ORTF Télévision 2 | 53 |
| Les Aventures de Tintin | November 28, 1957 | — | 15 |
| Les Kiwis | October 19, 2013 | — | 130 |
| Les Misérables | — | TF1 | 26 |
| Les Misérables: Shōjo Cosette | January 7, 2007 | — | 52 |
| Les Triplés | — | TF1, France 5 | 78 |
| Let Me Check the Walkthrough First!? | May 21, 2022 | — | 12 |
| Let This Grieving Soul Retire! | October 2, 2024 | — | 13 |
| Let's Dance with Papa | July 6, 1999 | TBS Television | 16 |
| Let's Go Kaikigumi | July 5, 2026 | — | 12 |
| Let's Go Karaoke! | July 24, 2025 | — | — |
| Let's Go Luna! | November 21, 2018 | TVOKids, PBS Kids, Knowledge Kids | 64 |
| Let's Go Pocoyo! | July 3, 2010 | Clan | 52 |
| Let's go to school Jaedong | — | — | — |
| Let's Go! Galaxy Guards | — | Korea Educational Broadcasting System, Mango TV | 52 |
| Let's Go!! MBA | October 21, 2009 | CCTV-14 Children, SBS TV | 52 |
| Let's Go, Bananas! | April 19, 2024 | Cartoon Network, CBC Kids, Sky Kids | 26 |
| Let's Gorilla! | — | KBS 2TV | — |
| Let's Make a Mug Too | April 3, 2021 | — | 24 |
| Let's Nupu Nupu | October 7, 1998 | TBS Television | 16 |
| Let's Play | October 2, 2025 | — | 12 |
| Letayushchiye zveri | August 11, 2012 | Carousel, OTV, Самара-ГИС (телеканал), Saint Petersburg, Mult | 44 |
| Let’s Go Quintuplets! | April 14, 2001 | TBS Television | 50 |
| Level 1 Demon Lord and One Room Hero | July 3, 2023 | — | 12 |
| Level E | January 11, 2011 | — | 13 |
| Leviathan | — | — | 12 |
| Leviathan: The Last Defense | April 6, 2013 | — | 13 |
| Levius | November 28, 2019 | — | — |
| Lexi & Lottie - Trusty Twin Detectives | 2017 | — | 26 |
| Li'l Miss Vampire Can't Suck Right | October 12, 2025 | — | 12 |
| Liar Game | April 7, 2026 | — | 26 |
| Liar Liar | July 8, 2023 | — | 12 |
| Liberty's Kids | September 2, 2002 | PBS | 40 |
| Library War | April 10, 2008 | Fuji Television | 12 |
| Licca-chan to Mahō no Kuni | October 9, 2009 | — | 7 |
| Life Lessons with Uramichi Oniisan | July 6, 2021 | — | 13 |
| Life with an Ordinary Guy Who Reincarnated into a Total Fantasy Knockout | January 12, 2022 | — | 12 |
| Life with Louie | December 18, 1994 | Fox Broadcasting Company | 39 |
| Lifeboat Luke | — | — | — |
| Lightspeed Electroid Albegas | March 30, 1983 | — | 45 |
| Like, Share, Die | January 29, 2015 | — | 16 |
| Lil Glooscap and the Legends of Turtle Island | — | — | — |
| Lil' Bush | June 13, 2007 | Comedy Central | 17 |
| Lil' Elvis and the Truckstoppers | March 6, 1997 | ABC Television | 26 |
| Lili e Lilion | — | — | — |
| Lillefinger | — | — | 26 |
| Lilly the Witch | September 4, 2004 | CBBC | 52 |
| Lilo & Stitch: The Series | September 20, 2003 | Disney Channel | 65 |
| Lilpri | April 4, 2010 | TV Tokyo | 51 |
| Lily's Driftwood Bay | May 5, 2014 | Nick Jr. | 100 |
| Lime-iro Ryūkitan X | January 4, 2005 | — | 13 |
| Lime-iro Senkitan | January 5, 2003 | Television Kanagawa | 13 |
| Lime-iro Senkitan: Nankoku Yume Roman | April 23, 2004 | — | 2 |
| Line Town | April 3, 2013 | — | — |
| Linebarrels of Iron | October 3, 2008 | — | 24 |