| Mobile Suit Gundam SEED Destiny | October 9, 2004 | MBS | 50 |
| Mobile Suit Gundam Thunderbolt | December 25, 2015 | — | 8 |
| Mobile Suit Gundam Unicorn | March 12, 2010 | — | 7 |
| Mobile Suit Gundam Unicorn RE:0096 | April 3, 2016 | — | 22 |
| Mobile Suit Gundam Wing | April 7, 1995 | TV Asahi | 49 |
| Mobile Suit Gundam ZZ | March 1, 1986 | — | 47 |
| Mobile Suit Gundam-san | July 6, 2014 | — | 13 |
| Mobile Suit Gundam: Iron-Blooded Orphans | October 4, 2015 | — | 50 |
| Mobile Suit Gundam: The 08th MS Team | January 25, 1996 | — | 12 |
| Mobile Suit Gundam: The Origin | February 28, 2015 | — | 6 |
| Mobile Suit Gundam: The Origin – Advent of the Red Comet | April 29, 2019 | NHK General TV | 13 |
| Mobile Suit Gundam: The Witch from Mercury | October 2, 2022 | — | 24 |
| Mobile Suit Victory Gundam | April 2, 1993 | — | 51 |
| Mobile Suit Zeta Gundam | March 2, 1985 | — | 50 |
| Moby Dick and Mighty Mightor | September 9, 1967 | CBS | 18 |
| Moby Dick and the Secret of Mu | April 16, 2005 | TF1 | 26 |
| Mock & Sweet | October 15, 1986 | — | 49 |
| Model Suit Gunpla Builders Beginning G | August 15, 2010 | — | 3 |
| Modern Magic Made Simple | July 11, 2009 | — | 12 |
| Moegaku | — | — | — |
| Moekan The Animation | December 19, 2003 | — | 3 |
| Moero! Top Striker | October 10, 1991 | TV Tokyo | 49 |
| Moetan | — | — | — |
| Moeyo Ken | November 19, 2003 | — | 4 |
| Moeyo Ken | July 1, 2005 | — | 13 |
| Mofli, the last koala | September 3, 1987 | Televisión Española | 13 |
| Mojacko | October 3, 1995 | — | — |
| Moka's Fabulous Adventures! | January 4, 2020 | Gulli | 78 |
| Mokke | October 3, 2007 | — | 24 |
| Molang | January 2, 2016 | Disney Jr. | 306 |
| Moldiver | February 25, 1993 | — | 6 |
| Mole’s World | — | — | — |
| Molly of Denali | July 15, 2019 | PBS, PBS Kids | 67 |
| Mom,I'm Sorry | May 23, 2024 | Bilibili | 18 |
| Momentary Lily | January 2, 2025 | — | 13 |
| Momo | November 3, 2003 | — | 26 |
| Momo Kyun Sword | July 9, 2014 | — | 12 |
| Momoiro Sisters | August 26, 1998 | TBS Television | 23 |
| Momokuri | December 24, 2015 | — | 26 |
| Momonsters | March 20, 2020 | Clan | 104 |
| Mon Chéri CoCo | August 27, 1972 | TBS Television | — |
| Mon Colle Knights | January 10, 2000 | TV Tokyo | 51 |
| Mona the Vampire | September 13, 1999 | YTV | 65 |
| Monarch: The Big Bear of Tallac | June 7, 1977 | TV Asahi, Asahi Broadcasting Group Holdings | 26 |
| Monchhichi | September 10, 1983 | — | — |
| Monchhichis | — | American Broadcasting Company | 13 |
| Mongo Wrestling Alliance | January 23, 2011 | Adult Swim, Cartoon Network | 10 |
| Monk Little Dog | June 16, 2009 | Canal+ | 52 |
| Monkart: Legend of Monster Kart | August 28, 2017 | — | 26 |
| Monkey Magic | — | — | 13 |
| Monkey Punch: Manga Katsudou Daishashin | July 31, 2004 | — | — |
| Monkey Turn | January 10, 2004 | — | 50 |
| Monkey Typhoon | October 1, 2002 | TV Tokyo | 52 |
| Mono | April 13, 2025 | — | 12 |
| Monochrome Factor | April 7, 2008 | — | 24 |
| Monogatari | July 3, 2009 | — | 100 |
| Mononoke | July 12, 2007 | Fuji Television | 12 |
| Monster | April 6, 2004 | Nippon Television | 74 |
| Monster Allergy | December 19, 2005 | ZDF, BBC One, Antena 3, Cartoon Network, Rai 2, YTV, M6 | 26 |
| Monster Buster Club | June 2, 2008 | Jetix, Gulli, YTV | 52 |