| Wacky Races | September 14, 1968 | CBS | 17 |
| Wacky Races | August 14, 2017 | Boomerang | 78 |
| Wakfu | October 30, 2008 | France 4, France 3 | 70 |
| Wally Gator | September 3, 1962 | American Broadcasting Company | 52 |
| Wallykazam! | February 3, 2014 | Nickelodeon | 44 |
| Walter Melon | September 3, 1997 | Canal+ | 52 |
| Wander Over Yonder | August 16, 2013 | Disney XD | 79 |
| Watch My Chops! | February 21, 2004 | France 3 | 52 |
| Wattoo Wattoo Super Bird | — | Antenne 2 | 56 |
| Waynehead | October 19, 1996 | Kids' WB | 13 |
| 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 |
| Welcome to the Wayne | December 26, 2017 | Nickelodeon | 6 |
| What a Cartoon! | February 20, 1995 | Cartoon Network | 48 |
| What It's Like Being Alone | June 26, 2006 | CBC Television | 13 |
| What's New, Scooby-Doo? | September 14, 2002 | The WB | 42 |
| What's with Andy? | June 30, 2001 | Télétoon | 78 |
| Whatever Happened to... Robot Jones? | July 12, 2002 | Cartoon Network | 13 |
| Wheel Squad | September 6, 2000 | M6 | 39 |
| Wheelie and the Chopper Bunch | September 7, 1974 | NBC | 13 |
| Where's My Water?: Swampy's Underground Adventures | October 18, 2012 | — | 12 |
| Whoopass Stew | — | — | — |
| WhyFly | — | 1+1, PLUSPLUS | 50 |
| Wild Grinders | April 27, 2012 | Nicktoons | 52 |
| Wild Instinct | 2001 | M6 | 52 |
| Wild Kratts | January 3, 2011 | TVOKids, PBS Kids | 179 |
| Willa's Wild Life | 2008 | France 5, YTV, Qubo | 26 |
| Willo the Wisp | September 14, 1981 | BBC One | 26 |
| Willy Fog 2 | 1993 | La 1 | 26 |
| Winston Steinburger and Sir Dudley Ding Dong | January 2, 2017 | — | 52 |
| Wish Kid | September 14, 1991 | NBC | 13 |
| Wolverine and the X-Men | January 23, 2009 | Nicktoons | 26 |
| Wonder Pets! | March 3, 2006 | Nickelodeon | 62 |
| Wonder Showzen | March 11, 2005 | MTV2, MTV2 | 16 |
| Woody Woodpecker | December 3, 2018 | Facebook, YouTube | 30 |
| WordGirl | September 3, 2007 | PBS Kids, PBS Kids Go! | 130 |
| WordWorld | September 3, 2007 | PBS | 45 |
| World of Quest | March 15, 2008 | The CW, Kids' WB | 26 |
| World of Winx | November 4, 2016 | Netflix, Rai Gulp | 26 |
| Wow! Wow! Wubbzy! | August 28, 2006 | Nickelodeon, Nick Jr. Channel, Starz | 52 |
| Wunschpunsch | October 14, 2000 | Jetix, TF1, Fox Kids, Cartoon Network | 52 |
| Wylde Pak | June 6, 2025 | Nickelodeon | 13 |
| Włatcy móch | November 14, 2006 | TV4 | 39 |
| X-DuckX | August 26, 2001 | France 3 | 78 |
| X-Men: Evolution | November 4, 2000 | The WB | 52 |
| Xavier Riddle and the Secret Museum | November 11, 2019 | PBS Kids, TVO Media Education Group | 47 |
| Xavier: Renegade Angel | November 4, 2007 | Adult Swim, Cartoon Network | 20 |
| Xiao Ping and Xiao An | July 3, 1985 | CTS Main Channel | — |
| Xiaolin Showdown | November 1, 2003 | The WB, Kids' WB | 52 |
| Yakari | December 24, 2005 | France 3 | 156 |
| Yakkity Yak | November 9, 2003 | Cartoon Network | 52 |
| Yakky Doodle | 1960 | — | 32 |
| Yin Yang Yo! | August 26, 2006 | Jetix | 65 |
| Yogi Bear & Friends | 1967 | Broadcast syndication | 96 |
| Yogi's Gang | September 8, 1973 | American Broadcasting Company | 17 |
| Yogi's Space Race | September 9, 1978 | NBC | 13 |
| Yogi's Treasure Hunt | September 6, 1985 | Broadcast syndication | 27 |
| YOLO: Crystal Fantasy | March 31, 2020 | Adult Swim, Cartoon Network | — |
| Yvon of the Yukon | September 9, 1999 | YTV | 52 |