| WondLa | — | — | 14 |
| Wondrous Myths and Legends | 1999 | — | 13 |
| Woofy | November 13, 2004 | ICI Radio-Canada Télé, France 5 | 65 |
| 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 | — |
| 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 |
| Wu Geng Ji | — | Tencent Video | — |
| Wunschpunsch | October 14, 2000 | Jetix, TF1, Fox Kids, Cartoon Network | 52 |
| Wyprawa Profesora Gąbki | 1979 | Telewizja Polska | 13 |
| Włatcy móch | November 14, 2006 | TV4 | 39 |
| X&Y | — | Bilibili | — |
| X-DuckX | August 26, 2001 | France 3 | 78 |
| 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 |
| Xcalibur | September 1, 2001 | YTV | 40 |
| Xiangqi Master | — | CCTV-14 Children | — |
| Xiao Ping and Xiao An | July 3, 1985 | CTS Main Channel | — |
| Xiaolin Chronicles | August 26, 2013 | Disney XD | 26 |
| Xiaolin Showdown | November 1, 2003 | The WB, Kids' WB | 52 |
| Xyber 9: New Dawn | September 25, 1999 | Fox Kids | 22 |
| Yakari | December 24, 2005 | France 3 | 156 |
| Yakkity Yak | November 9, 2003 | Cartoon Network | 52 |
| Yakky Doodle | 1960 | — | 32 |
| Yao-Chinese Folktales | January 1, 2023 | Bilibili | 8 |
| YaYa and Zouk | September 12, 2015 | Yoopa, ICI Radio-Canada Télé | 146 |
| Yellow Giraffe's Animal Stories | — | — | — |
| Yellow Jacket: The Beach Crazy Cyclist | — | — | 26 |
| Yellow Muzi & Friends | — | Tooniverse | — |
| Yin Yang Yo! | August 26, 2006 | Jetix | 65 |
| Yippee, Yappee and Yahooey | September 16, 1964 | — | 23 |
| Yo Yo | — | — | — |
| Yo Yogi! | September 14, 1991 | NBC | 19 |
| 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 |
| Yoko | — | STS | 52 |
| Yolanda, Daughter of the Black Corsair | 1999 | — | — |
| YOLO: Crystal Fantasy | March 31, 2020 | Adult Swim, Cartoon Network | — |
| Young Justice | November 26, 2010 | Cartoon Network | 98 |
| Young Robin Hood | September 15, 1991 | Broadcast syndication | 26 |
| Young Warriors of Koguryo | — | Korean Central Television | 7 |
| Your Friendly Neighborhood Spider-Man | January 29, 2025 | Disney+ | 10 |
| Yvon of the Yukon | September 9, 1999 | YTV | 52 |
| Z Takımı | April 23, 2021 | TRT Çocuk | 11 |
| Z-Squad | December 4, 2006 | SBS TV | 26 |
| Zack & Quack | February 7, 2014 | Nick Jr. Channel | 33 |
| Zafari | January 6, 2018 | — | 52 |
| Zak Storm | 2016 | Canal J | 39 |
| Zazoo U | September 8, 1990 | Fox Broadcasting Company | 13 |
| Zeke's Pad | December 26, 2008 | Seven Network, YTV | 26 |
| Zenimation | 2020 | Disney Channel, Disney+ | 20 |
| Zentrix | April 5, 2003 | — | 26 |
| Zeroman | September 11, 2004 | — | 13 |