| Mahjong Hishō-den: Naki no Ryū | — | — | — |
| Mahoraba: Heartful days | January 10, 2005 | TV Tokyo | 26 |
| Mahoromatic | October 5, 2001 | — | 26 |
| Mahou Shoujo Nante Mouiidesukara | January 12, 2016 | — | 24 |
| Mahō no Mako-chan | November 2, 1970 | — | 48 |
| Mahō Shoujo Isuka | April 24, 2010 | — | 3 |
| Mahōtsukai Chappy | April 3, 1972 | TV Asahi | 39 |
| Maid Ane | August 19, 2011 | — | 2 |
| Maid Sama! | April 1, 2010 | TBS Television | 26 |
| Maiden Blood | 2027 | — | — |
| Maiden Rose | — | — | — |
| Mail with Mr. ZIP | — | — | 48 |
| Mainichi ga Nichiyōbi | September 10, 1990 | — | 6 |
| Mainichi Kaasan | April 1, 2009 | TV Tokyo | 142 |
| Maison Ikkoku | March 26, 1986 | Fuji Television | 96 |
| Maisy | February 11, 1999 | CITV | 28 |
| Majestic Prince | April 4, 2013 | — | 24 |
| Maji de Watashi ni Koi Shinasai! | October 2, 2011 | — | 12 |
| Majime ni Fumajime Kaiketsu Zorori | February 1, 2004 | — | — |
| Majin Bone | April 1, 2014 | — | 52 |
| Majokko Megu-chan | April 1, 1974 | TV Asahi | 72 |
| Majokko Tickle | March 6, 1978 | TV Asahi | 45 |
| Major | November 13, 2004 | NHK Educational TV | 154 |
| Major 2nd | April 7, 2018 | — | — |
| Majutsu o Kiwamete Tabi ni Deta Tensei Elf, Moteamashita Jumyō de Ikeru Densetsu to Naru | January 2027 | — | — |
| Majū Sensen | — | — | 3 |
| Majū Sensen: The Apocalypse | February 23, 2003 | AT-X | 13 |
| Makai Senki Disgaea | April 4, 2006 | — | — |
| Make My Day | February 2, 2023 | — | — |
| Make Way for Noddy | September 2, 2002 | PBS, PBS Kids | 100 |
| Maken-ki | October 5, 2011 | — | 22 |
| Makina-san's a Love Bot?! | April 7, 2025 | — | 12 |
| Making Fiends | October 4, 2008 | Nicktoons | 6 |
| Makura no Danshi | July 13, 2015 | — | — |
| Malevolent Spirits | January 10, 2023 | — | — |
| Malo Korrigan | — | M6 | 26 |
| Mama is Just a Fourth Grade Pupil | January 10, 1992 | Nippon Television | 51 |
| Mama Loves the Poyopoyo-Saurus | September 2, 1995 | — | 52 |
| Mama Mirabelle's Home Movies | September 8, 2007 | CBeebies | 104 |
| Mama Puri!? | August 14, 2009 | — | 2 |
| Mami the Psychic | April 7, 1987 | TV Asahi | 119 |
| Mamoru-kun ni Megami no Shukufuku o! | October 6, 2006 | — | 24 |
| Mamotte Shugogetten | October 17, 1998 | TV Asahi | 22 |
| Mamotte! Lollipop | July 1, 2006 | — | 13 |
| Management of Novice Alchemist | October 3, 2022 | — | 12 |
| Manaria Friends | January 20, 2019 | — | 10 |
| Manga Aesop Monogatari | October 10, 1983 | — | 52 |
| Manga Fairy Tales of the World | — | TBS Television | 127 |
| Manga Kotowaza Jiten | October 11, 1980 | TV Tokyo | 88 |
| Manga Mito Kōmon | September 3, 1981 | TV Tokyo | — |
| Manga Nihon Emaki | October 5, 1977 | — | 46 |
| Manga Nihonshi | April 3, 1983 | Nippon Television | 52 |
| Manga Nippon Mukashibanashi | January 7, 1975 | — | — |
| Manga Sarutobi Sasuke | October 9, 1979 | — | 24 |
| Mangirl! | January 2, 2013 | — | 13 |
| Mankitsu Happening | March 27, 2015 | — | 4 |
| Manmaru the Ninja Penguin | July 5, 1997 | — | 48 |
| Mannetje & Mannetje | 1990 | VPRO | 12 |
| Manon | — | TiJi | 52 |
| Mansour | January 20, 2013 | — | 93 |