| Toon Marooned | — | — | 10 |
| ToonMarty | May 1, 2017 | Cartoon Network | 20 |
| Toonsylvania | February 7, 1998 | Fox Broadcasting Company | 21 |
| Toony Tube | September 21, 2018 | Cartoon Network | — |
| Top Cat | September 27, 1961 | American Broadcasting Company | 30 |
| Top Wing | November 6, 2017 | Nickelodeon | 52 |
| Topo Gigio | October 5, 2020 | — | — |
| Total Drama | July 8, 2007 | Télétoon | 120 |
| Total Drama Island | July 8, 2007 | Cartoon Network | 27 |
| Total Drama Presents: The Ridonculous Race | September 7, 2015 | Cartoon Network, Cartoon Network | 26 |
| Total DramaRama | September 1, 2018 | Cartoon Network, Pop Max | 152 |
| Totally Spies! | November 3, 2001 | TF1, Freeform, Gulli, Télétoon, Cartoon Network, Cartoon Network | 208 |
| Totally Tooned In | December 4, 1999 | — | 65 |
| Tracey McBean | February 18, 2002 | ABC Kids | 78 |
| Trailer Metal | — | — | — |
| Transformers: Cyberverse | September 1, 2018 | Cartoon Network | 62 |
| Transformers: Prime | November 26, 2010 | Discovery Family | — |
| Transformers: Rescue Bots | December 17, 2011 | Discovery Family | 104 |
| Transformers: Robots in Disguise | February 9, 2015 | Cartoon Network | 71 |
| Tremenda Opción del Sábado | March 4, 2000 | Telemundo, Telemicro, Televisión Nacional de Chile, Chilevisión, Univision, Galavisión, UniMás, Antena 7, Mega TV, HITD-TV, Distrito Comedia, Corporación Estatal de Radio y Televisión+3 | — |
| Tripping the Rift | March 4, 2004 | Syfy | 39 |
| TripTank | April 2, 2014 | Comedy Central | 18 |
| Troll Tales | 1999 | ZDF | 26 |
| Trollhunters: Tales of Arcadia | December 23, 2016 | Netflix | 52 |
| Trollkins | September 12, 1981 | CBS | 13 |
| Trollz | October 3, 2005 | TFOU | 27 |
| TroTro | 2004 | France 5 | 78 |
| True: Magical Friends | June 15, 2018 | Netflix | — |
| True: Wonderful Wishes | June 15, 2018 | Netflix | — |
| Trust Me, I’m a Genie! | December 8, 2010 | Télétoon+, CBBC, Canal+, Canal+ Family | 52 |
| Tuca & Bertie | May 3, 2019 | Netflix | 30 |
| Tumble Leaf | May 23, 2014 | Amazon Prime Video | 52 |
| Turbo Dogs | October 3, 2008 | CBC Kids, Qubo | 26 |
| Turbo FAST | December 24, 2013 | Netflix | 52 |
| Turn off the Light! | July 31, 2000 | NTV, TNT, TV-6, TVS | 210 |
| Tweety & Sylvester | — | — | 46 |
| Twelve Forever | July 29, 2019 | Netflix | 25 |
| Twende | — | Showmax | 13 |
| Ugly Americans | March 17, 2010 | Comedy Central | 31 |
| Ultimate Spider-Man | April 1, 2012 | Disney XD | 104 |
| Uncle Grandpa | September 2, 2013 | Cartoon Network | 156 |
| Underdog | October 3, 1964 | NBC, CBS | 124 |
| Undone | September 13, 2019 | Amazon Prime Video | 16 |
| Unikitty! | October 27, 2017 | Cartoon Network | 104 |
| Uniminipet | June 15, 2001 | SBS TV | 26 |
| Unsupervised | January 19, 2012 | FX | 13 |
| Untalkative Bunny | April 15, 2001 | Cartoon Network | 65 |
| Upin & Ipin | September 14, 2007 | Hungama TV, Disney Channel Asia, TV9, 8TV | 270 |
| Usavich | 2006 | MTV | 78 |
| Valley of the Dinosaurs | September 7, 1974 | CBS | 16 |
| VeggieTales | December 21, 1993 | NBC | 51 |
| VeggieTales in the City | February 24, 2017 | Netflix | 26 |
| VeggieTales in the House | November 26, 2014 | Netflix | 52 |
| Vic the Viking | July 4, 2013 | Network 10 | 78 |
| Victor and Valentino | March 30, 2019 | Cartoon Network | 68 |
| Villa Dulce | March 20, 2004 | — | 26 |
| Virtual Guardians | — | KBS 1TV | 26 |
| Virtual Hero | October 11, 2018 | #0 por Movistar Plus+ | 12 |
| Vroomiz | July 14, 2010 | EBS 1TV | 78 |
| W.I.T.C.H. | December 18, 2004 | Jetix, Disney Channel, Disney XD | 52 |