| Moomin | April 12, 1990 | TV Tokyo | 104 |
| Moonlight Mile | February 4, 2007 | WOWOW | 26 |
| More Than a Married Couple, But Not Lovers | October 9, 2022 | — | 12 |
| Moriarty the Patriot | October 11, 2020 | — | 24 |
| Moribito: Guardian of the Spirit | April 7, 2007 | NHK Satellite 2 Television | 26 |
| Morita-san wa Mukuchi | July 6, 2011 | — | 26 |
| Morizo to Kikkoro | — | NHK Educational TV | — |
| Moshidora | April 25, 2011 | NHK General TV | 10 |
| Mother of the Goddess' Dormitory | July 14, 2021 | — | 10 |
| Motto! Majime ni Fumajime Kaiketsu Zorori | April 5, 2020 | NHK Educational TV | — |
| Mouse | January 6, 2003 | Chiba Television Broadcasting | 12 |
| Moyasimon: Tales of Agriculture | October 12, 2007 | Fuji Television | 22 |
| Mr Love: Queen's Choice | July 16, 2020 | Tokyo MX | 12 |
| Mr. Osomatsu | October 5, 2015 | — | 25 |
| Mr. Stain on Junk Alley | January 6, 2003 | — | 14 |
| Mr. Tonegawa: Middle Management Blues | July 4, 2018 | Nippon Television | 24 |
| Mr. Villain's Day Off | January 8, 2024 | — | 12 |
| Mrs. Pepper Pot | April 4, 1983 | NHK General TV | 130 |
| Ms. Isshiki Wants to Know About Love | January 2027 | — | — |
| Ms. Koizumi Loves Ramen Noodles | January 4, 2018 | AT-X | 12 |
| Ms. Vampire Who Lives in My Neighborhood | October 5, 2018 | AT-X | 12 |
| Muka Muka Paradise | September 4, 1993 | — | — |
| Multi-Mind Mayhem | January 2027 | — | — |
| Murai in Love | October 6, 2024 | — | 12 |
| Murciélago | January 2027 | — | — |
| Murder Mystery of the Dead | November 13, 2024 | Tokyo MX | 6 |
| Muromi-san | April 7, 2013 | — | 13 |
| Musashi Gundoh | 2006 | — | 26 |
| Musashi no Ken | April 18, 1985 | TV Tokyo | 72 |
| Musashi, the Samurai Lord | October 3, 1990 | Nippon Television | — |
| Musasino! | July 2, 2022 | — | — |
| Mushi-Uta | July 6, 2007 | WOWOW | — |
| Mushibugyō | April 8, 2013 | — | 26 |
| Mushishi | October 23, 2005 | Tokyo MX | 46 |
| Mushoku Tensei | January 11, 2021 | — | 48 |
| Musumet | October 4, 2004 | — | 13 |
| Muteking the Dancing Hero | October 3, 2021 | — | 12 |
| Muteking, The Dashing Warrior | September 7, 1980 | Fuji Television | 56 |
| Mutsu Enmei-ryū Gaiden: Shura no Toki | April 6, 2004 | TV Tokyo | 26 |
| Muv-Luv Alternative | October 7, 2021 | — | 24 |
| Muv-Luv Alternative: Total Eclipse | July 2, 2012 | — | 24 |
| Muzik Tiger In the Forest | April 2, 2025 | — | — |
| My Awkward Senpai | October 2, 2025 | — | 12 |
| My Bride Is a Mermaid | April 1, 2007 | — | 26 |
| My Clueless First Friend | April 9, 2023 | — | 13 |
| My Crush's Crush | — | — | — |
| My Daddy Long Legs | January 14, 1990 | — | 40 |
| My Daughter Left the Nest and Returned an S-Rank Adventurer | October 6, 2023 | — | 13 |
| My Deer Friend Nokotan | July 7, 2024 | — | 12 |
| My Dress-Up Darling | January 9, 2022 | Tokyo MX | 12 |
| My First Girlfriend Is a Gal | July 12, 2017 | — | 10 |
| My Friend's Little Sister Has It In for Me! | October 5, 2025 | — | 12 |
| My Girlfriend is Shobitch | October 12, 2017 | — | 10 |
| My Happy Marriage | July 5, 2023 | Tokyo MX | 12 |
| My Hero Academia | April 3, 2016 | — | 138 |
| My Hero Academia: Vigilantes | April 7, 2025 | — | 13 |
| My Home Hero | April 2, 2023 | — | 12 |
| My Instant Death Ability Is So Overpowered | January 5, 2024 | — | 12 |
| My Isekai Life | July 4, 2022 | — | 12 |
| My Life as Inukai-san's Dog | January 7, 2023 | — | 12 |