| The Spectacular Spider-Man | March 8, 2008 | The CW | 26 |
| The Super Powers Team: Galactic Guardians | September 7, 1985 | American Broadcasting Company | 10 |
| The Three-Body Problem in Minecraft | — | Bilibili | 31 |
| The Transformers | September 17, 1984 | Broadcast syndication | 98 |
| Thundarr the Barbarian | October 4, 1980 | American Broadcasting Company | 21 |
| ThunderCats | January 23, 1985 | Broadcast syndication | 130 |
| Time Jam: Valerian & Laureline | October 20, 2007 | Canal+ | 40 |
| Time Squad | June 8, 2001 | Cartoon Network | 26 |
| Time Warp Trio | July 9, 2005 | NBC, Discovery Kids | 26 |
| Transformers: Animated | December 26, 2007 | Cartoon Network | 42 |
| Transformers: Generation 2 | 1993 | — | 52 |
| Transformers: Rescue Bots | December 17, 2011 | Discovery Family | 104 |
| Transformers: War for Cybertron Trilogy | July 30, 2020 | Netflix | 18 |
| Tripping the Rift | March 4, 2004 | Syfy | 39 |
| Tron: Uprising | May 18, 2012 | Disney Channel, Disney XD | 19 |
| Turning Mecard R | — | — | — |
| Ultimate Spider-Man | April 1, 2012 | Disney XD | 104 |
| Underdog | October 3, 1964 | NBC, CBS | 124 |
| Valley of the Dinosaurs | September 7, 1974 | CBS | 16 |
| Voltron: The Third Dimension | September 12, 1998 | Broadcast syndication | 26 |
| Vytor: The Starfire Champion | 1989 | — | 4 |
| What If...? | August 11, 2021 | Disney+ | 26 |
| Widget | September 29, 1990 | USA Network | 65 |
| Wild Kratts | January 3, 2011 | TVOKids, PBS Kids | 179 |
| Wing Commander Academy | September 21, 1996 | USA Network | 13 |
| Winston Steinburger and Sir Dudley Ding Dong | January 2, 2017 | — | 52 |
| Wolverine and the X-Men | January 23, 2009 | Nicktoons | 26 |
| WondLa | — | — | 14 |
| WordGirl | September 3, 2007 | PBS Kids, PBS Kids Go! | 130 |
| X-Men | October 31, 1992 | Fox Broadcasting Company, Fox Kids | 76 |
| X-Men '97 | March 20, 2024 | Disney+ | 19 |
| Xyber 9: New Dawn | September 25, 1999 | Fox Kids | 22 |
| Yin Yang Yo! | August 26, 2006 | Jetix | 65 |
| Yogi's Space Race | September 9, 1978 | NBC | 13 |
| Young Justice | November 26, 2010 | Cartoon Network | 98 |
| ZuZu & the Supernuffs | — | — | — |
| Æon Flux | September 1, 1991 | MTV | 16 |
| Ōban Star-Racers | April 12, 2006 | France 3 | 26 |