| Where's Waldo? | July 20, 2019 | Universal Kids, Peacock | 20 |
| Whiffle & Fuzz | March 24, 2008 | Playhouse Disney | — |
| Whisker Haven Tales With the Palace Pets | May 22, 2015 | Disney Jr. | 10 |
| Whisper Me a Love Song | April 14, 2024 | — | 12 |
| Whispered Words | October 7, 2009 | TV Tokyo | 13 |
| Whistle! | May 5, 2002 | — | — |
| White Album | January 4, 2009 | — | — |
| White Album 2 | October 6, 2013 | Tokyo MX, Nippon BS Broadcasting, TV Aichi, MBS | 13 |
| White Lightning | — | — | 6 |
| Whoopass Stew | — | — | — |
| Why Does Nobody Remember Me in This World? | July 13, 2024 | — | 12 |
| Why Raeliana Ended Up at the Duke's Mansion | April 10, 2023 | — | — |
| Why The Hell Are You Here, Teacher!? | April 8, 2019 | — | 12 |
| WhyFly | — | 1+1, PLUSPLUS | 50 |
| Wide-Eye | October 4, 2003 | CBeebies | 26 |
| Widget | September 29, 1990 | USA Network | 65 |
| Wil Cwac Cwac | 1931 | — | — |
| Wild 7 Another | April 27, 2002 | — | 13 |
| Wild Adapter | — | — | — |
| Wild Arms: Twilight Venom | October 18, 1999 | WOWOW | 22 |
| Wild Grinders | April 27, 2012 | Nicktoons | 52 |
| Wild Instinct | 2001 | M6 | 52 |
| Wild Knights Gulkeeva | April 4, 1995 | — | 26 |
| Wild Kratts | January 3, 2011 | TVOKids, PBS Kids | 179 |
| Wild Life | September 26, 2020 | Syfy | — |
| Wild West C.O.W.-Boys of Moo Mesa | September 12, 1992 | American Broadcasting Company | 26 |
| Wilf the Witch's Dog | 2002 | Fox Broadcasting Company, BBC One, La 2, Rai 2 | 26 |
| 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 |
| Win or Lose | 2024 | Disney+ | 8 |
| Wind Breaker | April 5, 2024 | — | 13 |
| Wind: A Breath of Heart | June 25, 2004 | — | 3 |
| Wind: A Breath of Heart | June 30, 2004 | AT-X | 13 |
| Windy Tales | September 11, 2004 | — | 13 |
| Wing Commander Academy | September 21, 1996 | USA Network | 13 |
| Winky Dink and You | October 10, 1953 | — | — |
| Winsome Witch | October 2, 1965 | NBC | 26 |
| Winston Steinburger and Sir Dudley Ding Dong | January 2, 2017 | — | 52 |
| Winter Cicada | February 23, 2007 | — | 3 |
| Winter Garden | December 23, 2006 | — | — |
| Winx Club | January 28, 2004 | Nickelodeon, Rai Yoyo, Rai 2, Nick Jr. Channel, Rai Gulp | 208 |
| Winx Club: The Magic Is Back | September 8, 2025 | Netflix, Rai 2, CBBC | 26 |
| Wisdom of the Gnomes | 1987 | La 1 | 26 |
| Wise Man's Grandchild | April 10, 2019 | — | 12 |
| Wish Cat | September 12, 2024 | SBS TV | 26 |
| Wish Kid | September 14, 1991 | NBC | 13 |
| Wish Upon the Pleiades | April 9, 2015 | — | 12 |
| Wishenpoof! | 2014 | Treehouse TV, Amazon Prime Video | 39 |
| Wishfart | September 5, 2017 | CITV | 40 |
| Wistoria: Wand and Sword | July 7, 2024 | — | 24 |
| Witch and Hound | — | — | — |
| Witch and Mercenary | 2027 | — | — |
| Witch Hat Atelier | April 6, 2026 | — | 13 |
| Witch Hunter Robin | July 2, 2002 | Animax, TV Tokyo | 26 |
| Witch Watch | April 6, 2025 | — | — |
| Witchblade | April 16, 2006 | — | 24 |
| Witchcraft Works | January 5, 2014 | — | 12 |
| Witchy Pretty Cure! | February 7, 2016 | — | 50 |
| Witchy Pretty Cure!! Mirai Days | January 11, 2025 | TV Asahi | 12 |