| Turning Mecard R | — | — | — |
| Turu and the Wackies | September 12, 2022 | — | — |
| Ultimate Spider-Man | April 1, 2012 | Disney XD | 104 |
| Underdog | October 3, 1964 | NBC, CBS | 124 |
| Untalkative Bunny | April 15, 2001 | Cartoon Network | 65 |
| Valley of the Dinosaurs | September 7, 1974 | CBS | 16 |
| Vampirina | October 1, 2017 | Disney Jr. | 78 |
| Vary Peri | November 10, 2012 | — | 40 |
| VeggieTales | December 21, 1993 | NBC | 51 |
| VeggieTales in the City | February 24, 2017 | Netflix | 26 |
| VeggieTales in the House | November 26, 2014 | Netflix | 52 |
| Victor and Valentino | March 30, 2019 | Cartoon Network | 68 |
| Vor-Tech: Undercover Conversion Squad | September 16, 1996 | Broadcast syndication | 13 |
| Wacky Races | September 14, 1968 | CBS | 17 |
| Wacky Races | August 14, 2017 | Boomerang | 78 |
| Walter Melon | September 3, 1997 | Canal+ | 52 |
| Watership Down | September 28, 1999 | CITV | 39 |
| Waterspider-Wonderspider | 1978 | — | 39 |
| Wayside | June 25, 2007 | Cartoon Network | 26 |
| We Baby Bears | January 1, 2022 | Cartoon Network | 47 |
| We Bare Bears | July 27, 2015 | Cartoon Network | 140 |
| Weird-Oh's | September 15, 1999 | Freeform | 13 |
| What a Cartoon! | February 20, 1995 | Cartoon Network | 48 |
| What's New, Scooby-Doo? | September 14, 2002 | The WB | 42 |
| What's the Big Idea? | March 23, 2013 | France 5 | 52 |
| Wheelie and the Chopper Bunch | September 7, 1974 | NBC | 13 |
| Whisker Haven Tales With the Palace Pets | May 22, 2015 | Disney Jr. | 10 |
| WhyFly | — | 1+1, PLUSPLUS | 50 |
| Wide-Eye | October 4, 2003 | CBeebies | 26 |
| Willo the Wisp | September 14, 1981 | BBC One | 26 |
| Win or Lose | 2024 | Disney+ | 8 |
| Winston Steinburger and Sir Dudley Ding Dong | January 2, 2017 | — | 52 |
| Winx Club | January 28, 2004 | Nickelodeon, Rai Yoyo, Rai 2, Nick Jr. Channel, Rai Gulp | 208 |
| Wish Kid | September 14, 1991 | NBC | 13 |
| Wishfart | September 5, 2017 | CITV | 40 |
| WordGirl | September 3, 2007 | PBS Kids, PBS Kids Go! | 130 |
| X-Men | October 31, 1992 | Fox Broadcasting Company, Fox Kids | 76 |
| Xavier Riddle and the Secret Museum | November 11, 2019 | PBS Kids, TVO Media Education Group | 47 |
| Xiaolin Showdown | November 1, 2003 | The WB, Kids' WB | 52 |
| Xyber 9: New Dawn | September 25, 1999 | Fox Kids | 22 |
| Yin Yang Yo! | August 26, 2006 | Jetix | 65 |
| Yogi's Treasure Hunt | September 6, 1985 | Broadcast syndication | 27 |
| Zeke's Pad | December 26, 2008 | Seven Network, YTV | 26 |
| Zou | August 20, 2012 | — | 156 |
| Zumbers | — | — | — |
| ZuZu & the Supernuffs | — | — | — |