| Library War | April 10, 2008 | Fuji Television | 12 |
| 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 |
| 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 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 |
| Locodol | July 4, 2014 | TBS Television | 12 |
| Log Horizon | October 5, 2013 | NHK Educational TV | 62 |
| LONA | April 2027 | — | — |
| Loner Life in Another World | October 4, 2024 | — | 12 |
| Long Riders! | October 8, 2016 | — | 12 |
| Lord El-Melloi II's Case Files: Rail Zeppelin Grace Note | July 6, 2019 | — | 13 |
| Lord Marksman and Vanadis | October 4, 2014 | — | 13 |
| Lord of Vermilion: The Crimson King | July 14, 2018 | — | — |
| Lost Song | March 31, 2018 | Netflix | 12 |
| Lost Universe | April 3, 1998 | TV Tokyo | 26 |
| Lostorage conflated WIXOSS | — | — | 12 |
| Lostorage incited WIXOSS | October 7, 2016 | — | 12 |
| Love After World Domination | April 8, 2022 | — | 12 |
| Love All Play | April 2, 2022 | — | 24 |
| Love and Lies | July 4, 2017 | — | 12 |
| Love Com | April 7, 2007 | Fuji Television | 24 |
| Love Get Chu: Miracle Seiyū Hakusho | April 5, 2006 | TV Tokyo | 25 |
| Love Hina | April 19, 2000 | TV Tokyo | 25 |
| Love Is Indivisible by Twins | July 10, 2024 | — | 12 |
| Love Lab | 2013 | — | 13 |
| Love Live! Hasunosora Girls' High School Idol Club | January 2027 | — | — |
| Love Live! Nijigasaki High School Idol Club | October 3, 2020 | — | 13 |
| Love Live! School Idol Project | 2013 | Tokyo MX | 26 |
| Love Live! Sunshine!! | July 2, 2016 | Tokyo MX | 26 |
| Love Live! Superstar!! | July 11, 2021 | NHK Educational TV | 24 |
| Love Love? | May 3, 2004 | — | 9 |
| Love of Kill | January 13, 2022 | — | 12 |
| Love Stage!! | July 9, 2014 | — | 10 |
| Love Tyrant | April 6, 2017 | — | 12 |
| Love Unseen Beneath the Clear Night Sky | July 6, 2026 | — | 12 |
| Love, Chunibyo & Other Delusions | October 4, 2012 | Tokyo MX, Animax, Sun Television, Nippon BS Broadcasting, Kyoto Broadcasting System, TVA | 24 |
| Love, Election and Chocolate | July 6, 2012 | — | 12 |
| Loveless | April 7, 2005 | TV Asahi | 12 |
| Lovely Movie: Lovely Muuuuuuuco! | July 29, 2013 | — | 43 |
| Lovely Muco | October 3, 2015 | — | 25 |
| Lucifer and the Biscuit Hammer | July 9, 2022 | — | 24 |