| Legend of DUO | October 27, 2004 | — | 12 |
| Legend of Heavenly Sphere Shurato | April 6, 1989 | — | 38 |
| Legend of Heavenly Sphere Shurato: Dark Genesis | August 16, 1991 | — | 6 |
| Legend of Himiko | January 7, 1999 | TV Tokyo | 12 |
| Legend of Lyon Flare | July 14, 1986 | — | 2 |
| Legend of Mana: The Teardrop Crystal | October 8, 2022 | — | 12 |
| Legend of the Galactic Heroes | December 21, 1988 | — | 110 |
| Legend of the Galactic Heroes: Die Neue These | March 31, 2018 | — | — |
| Legendary Gambler Tetsuya | October 7, 2000 | TV Asahi | 20 |
| Legends of the Dark King | October 10, 2008 | — | 13 |
| Legendz | April 4, 2004 | Fuji Television | — |
| Leina: Wolf Sword Legend | February 5, 1988 | — | 3 |
| Lemon Angel Project | March 31, 2006 | — | 13 |
| Les Misérables: Shōjo Cosette | January 7, 2007 | — | 52 |
| 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 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 |
| 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 | — | — |
| Li'l Miss Vampire Can't Suck Right | October 12, 2025 | — | 12 |
| Liar Game | April 7, 2026 | — | 26 |
| Liar Liar | July 8, 2023 | — | 12 |
| 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 |
| Lightspeed Electroid Albegas | March 30, 1983 | — | 45 |
| Lilpri | April 4, 2010 | TV Tokyo | 51 |
| 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 |
| Listeners | April 3, 2020 | — | 12 |
| Litchi DE Hikari Club | October 2, 2012 | — | — |
| Little Busters! | October 6, 2012 | — | 39 |
| Little Busters! EX | January 29, 2014 | — | 8 |
| Little Charo | April 2, 2008 | NHK Educational TV | 50 |
| Little Lord Fauntleroy | January 10, 1988 | Fuji Television | 43 |
| Little Lulu and Her Little Friends | October 3, 1976 | TV Asahi, National Educational Television | 26 |
| Little Memole | March 3, 1984 | TV Asahi | 50 |
| Little Mouse's Red Vest | April 4, 2026 | — | — |
| Little Pollon | May 8, 1982 | Fuji Television | 46 |
| Little Wansa | April 2, 1973 | — | 26 |
| Little Witch Academia | January 9, 2017 | — | 25 |
| Little Women | April 7, 1981 | — | 26 |
| Little Women II: Jo's Boys | January 17, 1993 | — | 40 |
| Live On Cardliver Kakeru | October 5, 2008 | TV Tokyo | — |
| Living for the Day After Tomorrow | October 5, 2006 | — | 12 |
| Locke the Superman: Lord Leon | October 25, 1989 | — | 3 |
| Locodol | July 4, 2014 | TBS Television | 12 |
| Log Horizon | October 5, 2013 | NHK Educational TV | 62 |