| Multirussia | 2006 | Channel One Russia, Carousel | — |
| Mummies Alive! | September 15, 1997 | Broadcast syndication | 42 |
| Mummy Nanny | April 17, 2001 | France 2, Super RTL, Canal J | 26 |
| Muppet Babies | March 23, 2018 | Disney Jr. | 89 |
| Mush-Mush & the Mushables | October 17, 2020 | Piwi+ | 50 |
| Music Up | — | — | — |
| My Adventures with Superman | July 7, 2023 | Adult Swim | 30 |
| My Big Big Friend | 2010 | Treehouse TV, Discovery Kids | 52 |
| My Brother the Minotaur | April 24, 2026 | Apple TV | — |
| My Dad the Bounty Hunter | February 9, 2023 | Netflix | 20 |
| My Dad the Rock Star | September 1, 2003 | Nickelodeon, Télétoon | 26 |
| My Daughter is a Zombie | — | EBS 1TV | 26 |
| My Favorite Martians | September 8, 1973 | CBS | 16 |
| My friend Haechi | July 25, 2010 | SBS TV | 26 |
| My Friends Tigger & Pooh | May 12, 2007 | Playhouse Disney, Disney Channel, Disney Jr. | 44 |
| My Gym Partner's a Monkey | December 26, 2005 | Cartoon Network | 52 |
| My Life as a Teenage Robot | August 1, 2003 | Nickelodeon | 40 |
| My Life Me | September 19, 2010 | — | 52 |
| My Little Pony | September 15, 1986 | Broadcast syndication | 65 |
| My Little Pony Tales | August 2, 1992 | Broadcast syndication | 26 |
| My Little Pony: Friendship Is Magic | October 10, 2010 | Discovery Family, Hub Network | 222 |
| My Little Pony: Make Your Mark | May 26, 2022 | — | 27 |
| My Melody & Kuromi | July 24, 2025 | Netflix | — |
| My Nezha and Transformers | December 6, 2025 | CCTV-14 Children | 52 |
| My Pet Monster | September 12, 1987 | American Broadcasting Company | 13 |
| My Robot & I | October 15, 2024 | BabyTV | 20 |
| My Secret Hamsters | — | KBS 1TV | 26 |
| My Senior Brother is Too Steady | — | — | 169 |
| My Two Cents | 2026 | Netflix | — |
| Mya Go | April 2017 | — | 156 |
| Myggan | September 19, 2007 | Kanal 5 | 16 |
| Mykyta the Fox | June 15, 2007 | Pershyi, Enterfilm, K2, Pixel TV, PLUSPLUS, TET, Zik, Гамма, Malyatko TV | 26 |
| Mystery Lane | — | — | 26 |
| Mysticons | August 28, 2017 | Nicktoons, Nickelodeon | 40 |
| Mythic Warriors | 1998 | Broadcast syndication | 26 |
| Mythical Feasts | — | — | — |
| Mythteria | — | EBS 1TV | — |
| Mópi | April 27, 1990 | RTP1 | 10 |
| Na tropie | — | — | 13 |
| Nalong | December 24, 2004 | Munhwa Broadcasting Corporation | 52 |
| Nano List | — | TVING | — |
| Nanocore | — | — | — |
| Nanook | 1996 | TF1 | 26 |
| Napoleon Dynamite | January 15, 2012 | Fox Broadcasting Company | 6 |
| Nate Is Late | 2018 | Super RTL, Nine Network | 156 |
| Nature Cat | November 25, 2015 | PBS Kids | 91 |
| Nature Heroes | — | — | — |
| Naughty Nuts | — | EBS 1TV | 26 |
| Nebezpechna zona | 2019 | NLO TV | — |
| Ned's Newt | October 18, 1997 | Cartoon Network | 39 |
| Neighbors from Hell | June 7, 2010 | TBS | 10 |
| Nella the Princess Knight | February 6, 2017 | Nickelodeon, Channel 5, Nick Jr. Channel, TV Cultura | 68 |
| Nellie the Elephant | January 8, 1990 | ITV1 | 30 |
| Nelly & Caesar | 2009 | — | 52 |
| Nelly & Nora | May 13, 2015 | — | 52 |
| Neo Yokio | September 22, 2017 | Netflix | 6 |
| Nerds and Monsters | March 12, 2014 | YTV | 40 |
| New Captain Scarlet | February 12, 2005 | ITV | 26 |
| New Kids on the Block | September 8, 1990 | Disney Channel | 14 |
| New Looney Tunes | September 21, 2015 | Boomerang, Cartoon Network | 102 |