| 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 |
| Xenosaga: The Animation | January 5, 2005 | — | 12 |
| Xiangqi Master | — | CCTV-14 Children | — |
| Xiao Ping and Xiao An | July 3, 1985 | CTS Main Channel | — |
| Xiao Xiao | — | Newgrounds | 10 |
| Xiaolin Chronicles | August 26, 2013 | Disney XD | 26 |
| Xiaolin Showdown | November 1, 2003 | The WB, Kids' WB | 52 |
| Xuan Yuan Sword Luminary | October 1, 2018 | — | 13 |
| XxxHolic | April 6, 2006 | — | 37 |
| Xyber 9: New Dawn | September 25, 1999 | Fox Kids | 22 |
| Ya Boy Kongming! | April 5, 2022 | — | 12 |
| Yadamon | August 24, 1992 | NHK General TV | — |
| Yaiba: Samurai Legend | April 5, 2025 | — | 24 |
| Yakari | December 24, 2005 | France 3 | 156 |
| Yakitate!! Japan | October 12, 2004 | TV Tokyo | 69 |
| Yakkity Yak | November 9, 2003 | Cartoon Network | 52 |
| Yakky Doodle | 1960 | — | 32 |
| Yakushiji Ryōko no Kaiki Jikenbo | July 6, 2008 | — | 13 |
| Yakuza Fiancé | October 7, 2024 | — | 12 |
| Yakyū-kyō no Uta | December 23, 1977 | — | 25 |
| Yamada-kun and the Seven Witches | April 12, 2015 | — | 12 |
| Yamato Takeru | April 9, 1994 | — | — |
| Yami to Bōshi to Hon no Tabibito | October 2, 2003 | — | 13 |
| Yamishibai: Japanese Ghost Stories | July 15, 2013 | — | 208 |
| Yanbo, Ninbo and Tonbo | April 5, 1995 | NHK Satellite 2 Television | 39 |
| Yandere Dark Elf | April 7, 2025 | — | 12 |
| Yano-kun's Ordinary Days | October 1, 2025 | — | 12 |
| Yao-Chinese Folktales | January 1, 2023 | Bilibili | 8 |
| Yarichin Bitch Club | June 10, 2012 | — | — |
| Yarob | — | — | 11 |
| Yasai no Yousei: N.Y. Salad | April 5, 2007 | — | — |
| Yashahime | October 3, 2020 | — | 48 |
| Yasuke | April 29, 2021 | — | 6 |
| YAT Anshin! Uchū Ryokō | October 5, 1996 | NHK Educational TV | 75 |
| Yatagarasu: The Raven Does Not Choose Its Master | April 6, 2024 | — | 20 |
| Yatogame-chan Kansatsu Nikki | April 4, 2019 | — | 46 |
| Yatterman | January 1, 1977 | Fuji Television, Nippon Television | — |
| Yatterman | January 14, 2008 | Yomiuri Telecasting Corporation | 60 |
| Yatterman Night | January 11, 2015 | — | — |
| Yattodetaman | February 7, 1981 | Fuji Television | 52 |
| Yawara! A Fashionable Judo Girl | October 16, 1989 | Nippon Television | 124 |
| 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 | — |
| Yes! PreCure 5 | February 4, 2007 | TV Asahi | 49 |
| Yes! PreCure 5 | February 4, 2007 | — | 97 |
| Yes! Pretty Cure 5 Go Go! | February 3, 2008 | — | 48 |
| 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 |
| Yo-kai Watch | January 8, 2014 | AT-X, TV Tokyo, Kids Station, BS TV Tokyo | — |
| Yo-kai Watch! | April 5, 2019 | — | 36 |
| Yo-kai Watch♪ | — | — | — |
| Yoake Mae yori Ruriiro na: Crescent Love | October 4, 2006 | — | 12 |
| Yogi Bear & Friends | 1967 | Broadcast syndication | 96 |
| Yogi's Gang | September 8, 1973 | American Broadcasting Company | 17 |