| The Mr. Men Show | February 4, 2008 | Channel 5 | 103 |
| The Mr. Men Show | September 15, 1997 | UPN | — |
| The Mumbly Cartoon Show | September 11, 1976 | American Broadcasting Company | 16 |
| The Mummy | September 29, 2001 | Kids' WB | 26 |
| The Muscleteers | 2021 | — | — |
| The Mysteries of Alfred Hedgehog | January 9, 2010 | TFO, TVO Media Education Group, Qubo | 26 |
| The Mysteries of Providence | 2002 | TF1 | 26 |
| The Mysterious Cities of Gold | June 29, 1982 | NHK General TV | 26 |
| The Mysterious Cities of Gold | November 17, 2012 | TF1 | 78 |
| The Mystic Archives of Dantalian | July 16, 2011 | — | 12 |
| The Mythical Detective Loki Ragnarok | April 5, 2003 | TV Tokyo | 26 |
| The Neverending Story | December 2, 1995 | HBO | 26 |
| The New Adventures of Batman | February 10, 1977 | CBS | 16 |
| The New Adventures of Beany and Cecil | September 10, 1988 | — | 5 |
| The New Adventures of Figaro Pho | November 4, 2012 | — | — |
| The New Adventures of Flash Gordon | September 22, 1979 | NBC | 32 |
| The New Adventures of Gigantor | October 3, 1980 | Nippon Television | 51 |
| The New Adventures of Gilligan | September 7, 1974 | American Broadcasting Company | 24 |
| The New Adventures of He-Man | September 1, 1990 | — | 65 |
| The New Adventures of Kimba The White Lion | October 12, 1989 | TV Tokyo | — |
| The New Adventures of Lucky Luke | September 16, 2001 | France 3 | 52 |
| The New Adventures of Mighty Mouse and Heckle & Jeckle | September 8, 1979 | CBS | 48 |
| The New Adventures of Ocean Girl | February 11, 2000 | Network 10 | 26 |
| The New Adventures of Superman | September 10, 1966 | CBS | 68 |
| The New Adventures of the Lone Ranger | September 13, 1980 | CBS | 28 |
| The New Adventures of Winnie the Pooh | January 17, 1988 | American Broadcasting Company, Disney Channel | 52 |
| The New Adventures of Zorro | September 20, 1997 | Kids' WB | 26 |
| The New Adventures of Zorro | September 12, 1981 | CBS | 13 |
| The New Batman Adventures | September 13, 1997 | The WB, Kids' WB | 24 |
| The New Batman/Superman Adventures | September 13, 1997 | The WB | — |
| The New Chronicles of Extraordinary Beings: Preface | — | Bilibili | — |
| The New Fantastic Four | September 9, 1978 | NBC | 13 |
| The New Fred and Barney Show | February 3, 1979 | NBC | 17 |
| The New Gate | April 14, 2024 | — | 12 |
| The New Scooby and Scrappy-Doo Show | September 10, 1983 | American Broadcasting Company | 52 |
| The New Scooby-Doo Movies | September 9, 1972 | CBS | 24 |
| The New Shmoo | September 22, 1979 | NBC | 16 |
| The New Three Stooges | October 1965 | Broadcast syndication | — |
| The New Woody Woodpecker Show | May 8, 1999 | Fox Broadcasting Company | 52 |
| The New World of the Gnomes | — | — | 26 |
| The New Yogi Bear Show | September 12, 1988 | Broadcast syndication | 45 |
| The Nordic Christmas Hour | — | — | — |
| The Nutshack | — | Myx | 16 |
| The Nutty Squirrels Present | September 1960 | Broadcast syndication | — |
| The Oblivious Saint Can't Contain Her Power | June 30, 2026 | — | 12 |
| The Oblongs | April 1, 2001 | The WB | 13 |
| The Oddball Couple | September 6, 1975 | American Broadcasting Company | 16 |
| The Off-Beats | November 29, 1996 | Nickelodeon | 14 |
| The Ogre's Bride | July 5, 2026 | — | 12 |
| The Ollie & Moon Show | May 27, 2017 | France 4, TVOKids, Universal Kids, Knowledge Kids | 52 |
| The One Piece | February 2027 | — | — |
| The Ones Within | July 7, 2019 | — | 12 |
| The Orbital Children | — | — | 6 |
| The Osmonds | September 9, 1972 | American Broadcasting Company | 17 |
| The Ossan Newbie Adventurer | July 2, 2024 | — | 12 |
| The Other World's Books Depend on the Bean Counter | January 6, 2026 | — | 12 |
| The Otome Heroine's Fight for Survival | July 2027 | — | — |
| The Owl | 2003 | France 3 | 52 |
| The Owl & Co | March 25, 2013 | France 3 | 156 |
| The Owl House | January 10, 2020 | Disney Channel, Disney XD | 43 |