| 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 |
| Microid S | April 7, 1973 | — | 26 |
| Midnight Horror School | October 2, 2003 | — | — |
| Midnight Occult Civil Servants | April 7, 2019 | — | 12 |
| 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 |
| Migi & Dali | October 2, 2023 | — | 13 |
| Mikagura School Suite | April 6, 2015 | — | 12 |
| Mikan Enikki | October 16, 1992 | — | 31 |
| Milky Subway: The Galactic Limited Express | July 3, 2025 | Tokyo MX | — |
| Millennium Family | — | — | — |
| Million Doll | July 6, 2015 | — | 12 |
| 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 |
| 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: Paths to My Future | April 2, 2025 | — | 5 |
| Misaki Chronicles | January 7, 2004 | — | 13 |
| Mischievous Twins: The Tales of St. Clare's | January 5, 1991 | Nippon Television | 26 |
| Misha the Little Bear | October 6, 1979 | — | — |
| Miss Caretaker of Sunohara-Sou | July 5, 2018 | — | 12 |
| Miss Kobayashi's Dragon Maid | January 12, 2017 | — | 25 |
| Miss Kuroitsu from the Monster Development Department | January 9, 2022 | — | 12 |
| Miss Machiko | October 8, 1981 | — | 95 |
| Miss Monochrome | October 2, 2013 | — | — |
| Miss Shachiku and the Little Baby Ghost | April 7, 2022 | — | 12 |
| Mission: Yozakura Family | April 7, 2024 | — | 27 |
| Mister Ajikko | October 8, 1987 | TV Tokyo | 99 |
| Mistress Kanan Is Devilishly Easy | April 5, 2026 | — | 12 |
| Mitchiri Neko | January 4, 2018 | — | — |