| 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 |
| Watership Down | December 22, 2018 | BBC One, Netflix | 4 |
| 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 |
| We the People | July 4, 2021 | — | — |
| Weather Hunters | September 8, 2025 | PBS Kids | — |
| 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 If...? | August 11, 2021 | Disney+ | 26 |
| What's New, Mr. Magoo? | September 10, 1977 | CBS | 16 |
| What's New, Scooby-Doo? | September 14, 2002 | The WB | 42 |
| What's with Andy? | June 30, 2001 | Télétoon | 78 |
| What-a-Mess | December 24, 1979 | British Broadcasting Company Limited | 45 |
| Whatever Happened to... Robot Jones? | July 12, 2002 | Cartoon Network | 13 |
| Wheelie and the Chopper Bunch | September 7, 1974 | NBC | 13 |
| Where My Dogs At? | June 10, 2006 | MTV2 | 8 |
| Where on Earth Is Carmen Sandiego? | February 5, 1994 | Fox Broadcasting Company | 40 |
| Where's Huddles? | July 1, 1970 | CBS, Cartoon Network | 10 |
| Where's My Water?: Swampy's Underground Adventures | October 18, 2012 | — | 12 |
| Where's Waldo? | September 14, 1991 | CBS, ITV | 13 |
| Where's Waldo? | July 20, 2019 | Universal Kids, Peacock | 20 |
| Whisker Haven Tales With the Palace Pets | May 22, 2015 | Disney Jr. | 10 |
| Whoopass Stew | — | — | — |
| Widget | September 29, 1990 | USA Network | 65 |
| Wild Grinders | April 27, 2012 | Nicktoons | 52 |
| Wild Life | September 26, 2020 | Syfy | — |
| Wild West C.O.W.-Boys of Moo Mesa | September 12, 1992 | American Broadcasting Company | 26 |
| Willa's Wild Life | 2008 | France 5, YTV, Qubo | 26 |
| Win or Lose | 2024 | Disney+ | 8 |
| Wing Commander Academy | September 21, 1996 | USA Network | 13 |
| Winky Dink and You | October 10, 1953 | — | — |
| Winsome Witch | October 2, 1965 | NBC | 26 |
| Winx Club | January 28, 2004 | Nickelodeon, Rai Yoyo, Rai 2, Nick Jr. Channel, Rai Gulp | 208 |
| Wish Kid | September 14, 1991 | NBC | 13 |
| Wishenpoof! | 2014 | Treehouse TV, Amazon Prime Video | 39 |
| Wizards: Tales of Arcadia | August 7, 2020 | Netflix | 10 |
| Wolfboy and the Everything Factory | September 24, 2021 | Apple TV | — |
| Wolverine and the X-Men | January 23, 2009 | Nicktoons | 26 |
| Women Wearing Shoulder Pads | August 17, 2025 | — | — |
| Wonder Pets! | March 3, 2006 | Nickelodeon | 62 |
| Wonder Showzen | March 11, 2005 | MTV2, MTV2 | 16 |
| WondLa | — | — | 14 |
| Wondrous Myths and Legends | 1999 | — | 13 |
| Woody Woodpecker | December 3, 2018 | Facebook, YouTube | 30 |
| WordGirl | September 3, 2007 | PBS Kids, PBS Kids Go! | 130 |
| WordWorld | September 3, 2007 | PBS | 45 |
| Work It Out Wombats! | February 6, 2023 | PBS Kids | — |
| 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 |
| X-Men | October 31, 1992 | Fox Broadcasting Company, Fox Kids | 76 |
| X-Men '97 | March 20, 2024 | Disney+ | 19 |
| 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 |