| Meiji Gekken: 1874 | January 14, 2024 | — | 10 |
| Meiji Tokyo Renka | April 9, 2019 | — | 12 |
| Meimon! Daisan Yakyū-bu | October 20, 1988 | — | 40 |
| Meine Liebe | November 4, 2004 | — | 26 |
| Mekakucity Actors | April 12, 2014 | — | 12 |
| Melody of Oblivion | April 6, 2004 | — | 24 |
| Melody of the Boundary | — | — | — |
| Mera×Death: Shinigami to Boku no Ijō na Koi | January 5, 2027 | — | — |
| Merc Storia: The Apathetic Boy and the Girl in a Bottle | October 11, 2018 | — | 12 |
| Mercedes and the Waning Moon | January 2027 | — | — |
| Mermaid Melody Pichi Pichi Pitch | April 5, 2003 | TV Aichi | 91 |
| Mermaid's Forest | October 4, 2003 | — | 11 |
| Merman in My Tub | October 6, 2014 | — | 13 |
| Meshimase Lodoss-tō Senki: Sorette Oishii no? | April 6, 2014 | — | 13 |
| Metal Armor Dragonar | February 7, 1987 | — | 48 |
| Metal Fighter Miku | July 8, 1994 | TV Tokyo | 13 |
| Metallic Rouge | January 11, 2024 | Fuji Television | 13 |
| Mewkledreamy | April 5, 2020 | — | — |
| Mezzo DSA | January 4, 2004 | — | 13 |
| MF Ghost | October 2, 2023 | — | 37 |
| Miami Guns | February 5, 2000 | — | 13 |
| Michiko & Hatchin | October 16, 2008 | — | 22 |
| Mickey and the Roadster Racers | — | — | — |
| Microid S | April 7, 1973 | — | 26 |
| Midnight Horror School | October 2, 2003 | — | — |
| Midnight Occult Civil Servants | April 7, 2019 | — | 12 |
| Midnight Panther | August 25, 1998 | — | 2 |
| Midori Days | April 4, 2004 | — | 13 |
| Midori no Makibaō | March 9, 1996 | Fuji Television | — |
| Mieruko-chan | October 3, 2021 | — | 12 |
| Mighty Cat Masked Niyandar | February 6, 2000 | — | 83 |
| Mighty Space Miners | November 11, 1994 | — | 2 |
| Migi & Dali | October 2, 2023 | — | 13 |
| Mikagura School Suite | April 6, 2015 | — | 12 |
| Mikagura Tanteidan | March 26, 2004 | — | 3 |
| Mikan Enikki | October 16, 1992 | — | 31 |
| Milk Money | April 9, 2004 | — | 2 |
| Milky Subway: The Galactic Limited Express | July 3, 2025 | Tokyo MX | — |
| Millennium Family | — | — | — |
| Million Doll | July 6, 2015 | — | 12 |
| Milpom | — | — | — |
| Minami Kamakura High School Girls Cycling Club | January 6, 2017 | — | 12 |
| Minami-ke | October 7, 2007 | — | 13 |
| Minami-ke: Korekara | April 2027 | — | — |
| Minami-ke: Okaeri | January 4, 2009 | — | 13 |
| Minami-ke: Okawari | January 6, 2008 | — | 13 |
| Minami-ke: Tadaima | January 5, 2013 | — | 13 |
| Mini Hama: Minimum Hamatora | November 2, 2015 | — | 8 |
| Mini Vanguard | April 6, 2013 | BS TV Tokyo | — |
| Minna Atsumare! Falcom Gakuen | January 5, 2014 | — | 26 |
| Miracle Girl Limit-chan | October 1, 1973 | TV Asahi | 25 |
| Miracle Girls | January 8, 1993 | — | 51 |
| Miracle Train: Ōedo-sen e Yōkoso | October 4, 2009 | — | — |
| Mirage of Blaze | January 7, 2002 | Kids Station | 13 |
| Mirage of Blaze: Rebels of the River Edge | July 28, 2004 | — | — |
| Mirai Keisatsu Urashiman | January 9, 1983 | Fuji Television | 50 |
| Mirai Shounen Conan II: Taiga Adventure | October 16, 1999 | TBS Television | 24 |
| Mirakuru! Mimika | April 3, 2006 | NHK Educational TV | — |
| Miru Tights | May 11, 2019 | — | 12 |
| Miru: Paths to My Future | April 2, 2025 | — | 5 |