| The Wacky Adventures of Ronald McDonald | — | — | 6 |
| The Wacky World of Tex Avery | September 3, 1997 | M6 | 65 |
| The Weekenders | February 26, 2000 | American Broadcasting Company, UPN, Toon Disney | 39 |
| The Why Why Family | 1996 | Das Erste | 130 |
| The Wild Thornberrys | September 1, 1998 | Nickelodeon | 91 |
| The Wizard of Oz | September 8, 1990 | American Broadcasting Company | 13 |
| The Wonderful World of Mickey Mouse | November 18, 2020 | Disney+ | — |
| The Woody Woodpecker Show | October 3, 1957 | American Broadcasting Company | 194 |
| 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 Zeta Project | January 27, 2001 | The WB | 26 |
| The ZhuZhus | September 12, 2016 | Disney Channel | 26 |
| 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 Just In! | 2004 | Paramount Network | — |
| 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 Girls in Action | January 22, 2024 | Disney Jr. | 1 |
| Thundarr the Barbarian | October 4, 1980 | American Broadcasting Company | 21 |
| ThunderCats | July 29, 2011 | Cartoon Network | 26 |
| ThunderCats | January 23, 1985 | Broadcast syndication | 130 |
| ThunderCats Roar | February 22, 2020 | Cartoon Network | 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 | — |
| Time Squad | June 8, 2001 | Cartoon Network | 26 |
| Time Warp Trio | July 9, 2005 | NBC, Discovery Kids | 26 |
| Timon & Pumbaa | September 8, 1995 | CBS, Broadcast syndication | 85 |
| Tiny Ones Transport Service | June 14, 2019 | Disney Jr. | 75 |
| Tiny Toon Adventures | September 14, 1990 | Fox Broadcasting Company, Fox Kids | 98 |
| Tiny Toons Looniversity | September 9, 2023 | HBO Max | 10 |
| Titan Maximum | September 27, 2009 | Adult Swim, Cartoon Network | 72 |
| Todd McFarlane's Spawn | May 16, 1997 | HBO | 18 |
| Tom & Jerry Kids | September 8, 1990 | Fox Broadcasting Company | 65 |
| Tom and Jerry in New York | July 1, 2021 | HBO Max | 52 |
| Tom and Jerry Special Shorts | February 20, 2021 | HBO Max | — |
| Tom and Jerry Tales | September 23, 2006 | Kids' WB | 26 |
| Tom Goes to the Mayor | November 14, 2004 | Adult Swim, Cartoon Network | 31 |
| Tom Terrific | 1957 | — | 26 |
| Tomb Raider: The Legend of Lara Croft | October 10, 2024 | Netflix | 16 |
| Toon Marooned | — | — | 10 |
| ToonHeads | October 2, 1992 | Cartoon Network | 82 |
| Tooning Out the News | April 7, 2020 | Paramount+ | — |
| Toonsylvania | February 7, 1998 | Fox Broadcasting Company | 21 |
| Toot & Puddle | November 16, 2008 | Nick Jr. Channel | 52 |
| Tooter Turtle | October 15, 1960 | — | 39 |
| Top Cat | September 27, 1961 | American Broadcasting Company | 30 |
| Tortellini Western | June 20, 2004 | Nicktoons | — |
| Totally Tooned In | December 4, 1999 | — | 65 |
| Touché Turtle and Dum Dum | September 3, 1962 | Broadcast syndication | 52 |
| Toxic Crusaders | 1990 | Fox Broadcasting Company | 13 |
| Trailer Metal | — | — | — |
| Transformers: Animated | December 26, 2007 | Cartoon Network | 42 |
| Transformers: Armada | August 23, 2002 | TX Network | 52 |