| The Jungle Book | October 2, 1989 | Fuji Television | 52 |
| The Kabocha Wine | July 5, 1982 | — | 95 |
| The Karate Kid | September 9, 1989 | NBC | 13 |
| The Kawai Complex Guide to Manors and Hostel Behavior | April 3, 2014 | TBS Television | 12 |
| The Kept Man of the Princess Knight | January 2027 | — | — |
| The Kid Super Power Hour with Shazam! | September 12, 1981 | NBC | — |
| The Kids from Room 402 | August 29, 2000 | Television networks preceding ABC Family | 52 |
| The Kindaichi Case Files | April 7, 1997 | — | 148 |
| The Kindaichi Case Files R | April 5, 2014 | Yomiuri Telecasting Corporation | 47 |
| The King Kong Show | September 10, 1966 | American Broadcasting Company | 25 |
| The King of Braves GaoGaiGar | February 1, 1997 | — | 49 |
| The King of Braves GaoGaiGar Final | — | — | — |
| The King's Avatar | — | — | — |
| The Kingdoms of Ruin | October 7, 2023 | — | 12 |
| The Klutzy Class Monitor and the Girl with the Short Skirt | April 6, 2026 | — | 12 |
| The Knight in the Area | January 7, 2012 | TV Asahi | 37 |
| The Koala Brothers | October 4, 2003 | CBeebies, ABC Kids | 79 |
| The Kwicky Koala Show | September 12, 1981 | CBS | 16 |
| The Laid-Off Cheat-Granting Mage Enjoys a Second Lease on Life | October 7, 2026 | — | — |
| The Lampies | October 12, 2000 | BBC Children's and Education | 52 |
| The Land Before Time | March 4, 2007 | Cartoon Network | 26 |
| The Large Family | October 15, 2007 | CBeebies | 52 |
| The Last Kids on Earth | September 17, 2019 | Netflix | 21 |
| The Laughing Salesman | October 10, 1989 | — | — |
| The Law of Ueki | April 4, 2005 | TV Tokyo | 51 |
| The Leader | January 28, 2019 | Bilibili | 7 |
| The Legend of Calamity Jane | September 13, 1997 | The WB | 13 |
| The Legend of Condor Hero | October 11, 2001 | — | — |
| The Legend of Heroes: Trails in the Sky | October 10, 2011 | — | 2 |
| The Legend of Heroes: Trails of Cold Steel – Northern War | January 6, 2023 | — | 12 |
| The Legend of Korra | April 14, 2012 | Nickelodeon | 52 |
| The Legend of Luo Xiaohei | — | — | — |
| The Legend of Nezha | June 1, 2003 | China Central Television | 52 |
| The Legend of Prince Valiant | September 3, 1991 | Freeform | 65 |
| The Legend of Qin | 2007 | — | 110 |
| The Legend of Sky Lord 3D | June 25, 2024 | IQIYI | 24 |
| The Legend of Snow White | April 6, 1994 | NHK Satellite 2 Television | 52 |
| The Legend of Tarzan | September 3, 2001 | UPN, Broadcast syndication | 39 |
| The Legend of the Legendary Heroes | July 1, 2010 | TV Tokyo | 24 |
| The Legend of Vox Machina | January 28, 2022 | Amazon Prime Video | 48 |
| The Legend of White Fang | 1992 | Family Channel | 26 |
| The Legend of Zelda | September 8, 1989 | Broadcast syndication | 13 |
| The Legend of Zeta & Ozz | February 18, 2019 | — | — |
| The Legend of Zorro | April 5, 1996 | NHK Satellite 2 Television | 52 |
| The Legendary Hero Is Dead! | April 7, 2023 | — | 12 |
| The Legends of Treasure Island | September 10, 1993 | ITV | 26 |
| The Liberator | November 11, 2020 | Netflix | 4 |
| The Life & Times of Tim | September 28, 2008 | HBO | 30 |
| The Life and Times of Juniper Lee | May 30, 2005 | Cartoon Network | 40 |
| The Lion Guard | November 22, 2015 | Disney Jr. | 74 |
| The Lionhearts | September 19, 1998 | Broadcast syndication | 13 |
| The Littl' Bits | 1980 | TV Tokyo | 26 |
| The Little Clowns of Happytown | September 26, 1987 | American Broadcasting Company | 18 |
| The Little Dinos | — | CCTV-14 Children | 52 |
| The Little Flying Bears | September 2, 1990 | ICI Radio-Canada Télé, Family Channel | 39 |
| The Little Hero | — | Channel 4 | 30 |
| The Little Lulu Show | November 11, 1995 | TV Globo, HBO, Boomerang, CTV Television Network, Cartoon Network, Sistema Brasileiro de Televisão, Record, Multishow, Family Channel, Disney Channel, TV Cultura, Nova Geração de Televisão | 52 |
| The Little Mermaid | September 12, 1992 | CBS | 31 |
| The Little Mole and Panda | 2016 | — | — |
| The Little Orchestra | 2022 | — | — |