| The Wizard of Oz | September 8, 1990 | American Broadcasting Company | 13 |
| The Wombles | February 5, 1973 | BBC Two | 60 |
| The Wonderful World of Mickey Mouse | November 18, 2020 | Disney+ | — |
| The Wonderfully Weird World of Gumball | — | — | 40 |
| The Woody Woodpecker Show | October 3, 1957 | American Broadcasting Company | 194 |
| The Woohoos! | November 16, 2024 | Channel 5 | — |
| The World of David the Gnome | October 26, 1985 | La 1 | 26 |
| The World of Peter Rabbit and Friends | May 13, 1992 | British Broadcasting Corporation | 9 |
| The World of Tosh | January 26, 2002 | SVT1 | 26 |
| The World's Greatest Super Friends | September 22, 1979 | American Broadcasting Company | 8 |
| The Wrong Coast | December 3, 2003 | AMC, Crave | — |
| The Wuzzles | September 14, 1985 | CBS | 13 |
| The Yogi Bear Show | January 30, 1961 | American Broadcasting Company | 52 |
| The Young Challengers | May 11, 2026 | Korean Central Television | — |
| The Zeta Project | January 27, 2001 | The WB | 26 |
| The ZhuZhus | September 12, 2016 | Disney Channel | 26 |
| The Zimmer Twins | — | — | 106 |
| The Zula Patrol | September 5, 2005 | — | 52 |
| These Are the Days | September 7, 1974 | American Broadcasting Company | 16 |
| This Is America, Charlie Brown | October 21, 1988 | CBS | 8 |
| This is Chukpa | — | — | 50 |
| This Just In! | 2004 | Paramount Network | — |
| This World Can't Tear Me Down | 2023 | Netflix | 6 |
| Thomas & Friends | October 9, 1984 | ITV1, Channel 5, Nick Jr. | 584 |
| Thomas & Friends: All Engines Go | September 13, 2021 | Cartoon Network, Netflix, Cartoonito | 148 |
| Thor & Loki: Blood Brothers | — | — | — |
| Three Delivery | June 27, 2008 | Nicktoons | 26 |
| Three from Prostokvashino | 1976 | Soviet Central Television | 3 |
| Three Girls in Action | January 22, 2024 | Disney Jr. | 1 |
| Three Kittens | 2009 | — | 49 |
| Thundarr the Barbarian | October 4, 1980 | American Broadcasting Company | 21 |
| Thunderbirds Are Go! | April 4, 2015 | ITV | 70 |
| ThunderCats | July 29, 2011 | Cartoon Network | 26 |
| ThunderCats | January 23, 1985 | Broadcast syndication | 130 |
| ThunderCats Roar | February 22, 2020 | Cartoon Network | 52 |
| Tianwang | — | IQIYI | — |
| Tickety Toc | April 19, 2012 | Korea Educational Broadcasting System | 52 |
| Tig n' Seek | July 23, 2020 | Cinemax | — |
| TigerSharks | 1987 | Broadcast syndication | 26 |
| Tigga & Togga | February 16, 2006 | — | — |
| Tigtone | January 13, 2019 | Adult Swim | — |
| Tim Rex in Space | May 5, 2025 | Nickelodeon, Channel 5 | — |
| Timbalo | June 25, 2025 | Ketnet | 20 |
| Time Cracks | 2004 | Australian Broadcasting Corporation | — |
| Time Jam: Valerian & Laureline | October 20, 2007 | Canal+ | 40 |
| Time Squad | June 8, 2001 | Cartoon Network | 26 |
| Time Traveler Luke | — | KBS 1TV, TVS (Malaysian TV channel) | 52 |
| Time Warp Trio | July 9, 2005 | NBC, Discovery Kids | 26 |
| Timmy Time | April 6, 2009 | CBeebies | 68 |
| Timon & Pumbaa | September 8, 1995 | CBS, Broadcast syndication | 85 |
| Tina & Tony | 2015 | — | 208 |
| Tinga Tinga Tales | February 15, 2010 | France 5 | 52 |
| Tinpo | December 10, 2018 | — | — |
| Tiny Ones Transport Service | June 14, 2019 | Disney Jr. | 75 |
| Tiny Planets | June 10, 2001 | CITV | 65 |
| Tiny Toon Adventures | September 14, 1990 | Fox Broadcasting Company, Fox Kids | 98 |
| Tiny Toons Looniversity | September 9, 2023 | HBO Max | 10 |
| Tiny Toot | March 22, 2024 | — | 26 |
| Tish Tash | — | EBS 1TV | — |
| Titan Maximum | September 27, 2009 | Adult Swim, Cartoon Network | 72 |