| Watch My Chops! | February 21, 2004 | France 3 | 52 |
| Watership Down | September 28, 1999 | CITV | 39 |
| Watership Down | December 22, 2018 | BBC One, Netflix | 4 |
| Waterspider-Wonderspider | 1978 | — | 39 |
| Wattoo Wattoo Super Bird | — | Antenne 2 | 56 |
| Wave!!: Let's Go Surfing | October 2, 2020 | — | — |
| Wave!!: Let's Go Surfing | January 12, 2021 | — | 12 |
| Wave, Listen to Me! | April 3, 2020 | — | 12 |
| Way of Choices | January 31, 2026 | IQIYI | 26 |
| Waynehead | October 19, 1996 | Kids' WB | 13 |
| Wayside | June 25, 2007 | Cartoon Network | 26 |
| We are Clever Detectives | — | MBC TV | 52 |
| We Baby Bears | January 1, 2022 | Cartoon Network | 47 |
| We Bare Bears | July 27, 2015 | Cartoon Network | 140 |
| We Never Learn | April 7, 2019 | — | 26 |
| We the People | July 4, 2021 | — | — |
| We Were There | July 3, 2006 | — | 26 |
| We Without Wings | April 4, 2011 | — | 12 |
| Weather Hunters | September 8, 2025 | PBS Kids | — |
| Weather Report Girl | — | — | 2 |
| Wedding Peach | April 5, 1995 | TV Tokyo | 51 |
| Wedding Peach DX | December 24, 1996 | — | 4 |
| Weed | November 3, 2005 | Animax | 26 |
| Weird Years | November 6, 2006 | YTV | 26 |
| Weird-Oh's | September 15, 1999 | Freeform | 13 |
| Weiß Kreuz | April 8, 1998 | — | — |
| Weiß Survive | June 5, 2009 | — | — |
| Welcome Home | April 9, 2024 | — | 12 |
| Welcome to Demon School! Iruma-kun | October 5, 2019 | NHK Educational TV | 65 |
| Welcome to Demon School! Iruma-kun: IruMafia Edition | January 4, 2027 | NHK General TV | — |
| Welcome to Japan, Ms. Elf! | January 10, 2025 | AT-X | 12 |
| Welcome to Japari Park | — | — | 36 |
| Welcome to Pia Carrot | October 24, 1997 | — | 3 |
| Welcome to Pia Carrot 2 | October 23, 1998 | — | 3 |
| Welcome to the Ballroom | July 8, 2017 | — | 24 |
| Welcome to the N.H.K. | July 9, 2006 | — | 24 |
| Welcome to the Outcast's Restaurant! | July 3, 2025 | — | 12 |
| Welcome to the Wayne | December 26, 2017 | Nickelodeon | 6 |
| Wesh Selender | 2011 | — | 30 |
| What a Cartoon! | February 20, 1995 | Cartoon Network | 48 |
| What are you doing Nini? | — | KBS 2TV | 52 |
| What If...? | August 11, 2021 | Disney+ | 26 |
| What It's Like Being Alone | June 26, 2006 | CBC Television | 13 |
| What's Michael? | April 15, 1988 | TV Tokyo | 45 |
| What's New, Mr. Magoo? | September 10, 1977 | CBS | 16 |
| What's New, Scooby-Doo? | September 14, 2002 | The WB | 42 |
| What's the Big Idea? | March 23, 2013 | France 5 | 52 |
| 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 |
| Wheel Squad | September 6, 2000 | M6 | 39 |
| Wheelie and the Chopper Bunch | September 7, 1974 | NBC | 13 |
| When Supernatural Battles Became Commonplace | October 6, 2014 | — | 12 |
| When Will Ayumu Make His Move? | July 8, 2022 | — | 12 |
| Where My Dogs At? | June 10, 2006 | MTV2 | 8 |
| Where on Earth Is Carmen Sandiego? | February 5, 1994 | Fox Broadcasting Company | 40 |
| Where's Chicky? | 2014 | Gulli, France Télévisions | 208 |
| 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 |