| No-Clipping My Way to Supremacy! | 2027 | — | — |
| Noblesse | October 7, 2020 | — | 13 |
| Noozles | July 7, 1984 | Fuji Television | 26 |
| Noragami | January 5, 2014 | — | 25 |
| Ojarumaru | October 5, 1998 | NHK Educational TV | 1,868 |
| Omniscient Reader's Viewpoint | — | — | — |
| Once Upon a Witch's Death | April 1, 2025 | — | 12 |
| Onegai My Melody | April 3, 2005 | — | — |
| Onegai! Samia-don | April 2, 1985 | NHK General TV | 78 |
| Onmyō Taisenki | September 30, 2004 | — | 52 |
| Operation Han-Gyaku-Sei Million Arthur | October 25, 2018 | — | 24 |
| Orient | January 6, 2022 | — | 24 |
| Otaku Elf | April 8, 2023 | — | 12 |
| Our Home's Fox Deity | April 6, 2008 | — | 24 |
| Our Last Crusade or the Rise of a New World | October 7, 2020 | — | 12 |
| Outbreak Company | October 3, 2013 | — | 12 |
| Ozanari Dungeon: Kaze no Tō | September 27, 1991 | — | — |
| Pandora Hearts | April 2, 2009 | TBS Television | 25 |
| Parallel World Pharmacy | July 10, 2022 | — | 12 |
| Parasol Henbē | October 2, 1989 | NHK General TV | 200 |
| Peach Boy Riverside | July 1, 2021 | — | 12 |
| Peter Grill and the Philosopher's Time | July 11, 2020 | — | 24 |
| Phantom in the Twilight | July 10, 2018 | — | 12 |
| Phantom Quest Corp. | — | — | 4 |
| Phantom Thief Jeanne | February 13, 1999 | TV Asahi | 44 |
| Pita-Ten | April 7, 2002 | TV Tokyo | 26 |
| Platinum End | October 8, 2021 | TBS Television | 24 |
| Please Save My Earth | December 17, 1993 | — | 6 |
| Plunderer | January 8, 2020 | — | 24 |
| Pokémon | April 1, 1997 | TV Tokyo, TX Network | 1,115 |
| Ponkotsu Quest: Maou to Haken no Mamono-tachi | August 22, 2013 | — | 84 |
| Popotan | July 18, 2003 | BS-TBS | 12 |
| Possibly the Greatest Alchemist of All Time | January 8, 2025 | — | 12 |
| Princess Tutu | August 16, 2002 | — | 26 |
| Private Tutor to the Duke's Daughter | July 5, 2025 | — | 12 |
| Problem Children Are Coming from Another World, Aren't They? | January 12, 2013 | Tokyo MX | 10 |
| Pururun! Shizuku-chan | October 7, 2006 | — | 102 |
| Quality Assurance in Another World | July 6, 2024 | — | 13 |
| Queen's Blade | April 2, 2009 | — | 24 |
| Queen's Blade Rebellion | April 3, 2012 | — | 12 |
| Queen's Blade Rebellion | October 29, 2011 | — | 4 |
| Queen's Blade: Beautiful Warriors | August 8, 2010 | — | 6 |
| Radiant | October 6, 2018 | NHK Educational TV | 42 |
| Rage of Bahamut | October 6, 2014 | Mangas | 12 |
| Rage of Bahamut: Virgin Soul | April 7, 2017 | — | — |
| Ragna Crimson | October 1, 2023 | — | 24 |
| Ragnarok the Animation | April 6, 2004 | — | 26 |
| Rakugo Tennyo Oyui | January 5, 2006 | — | 12 |
| Ranking of Kings | October 15, 2021 | Fuji Television | — |
| Ranma ½ | April 15, 1989 | Fuji Television | 18 |
| Raven of the Inner Palace | October 1, 2022 | — | 13 |
| Re:Creators | April 8, 2017 | Tokyo MX, Nippon BS Broadcasting, Tochigi Television, Gunma Television | 22 |
| Re:Monster | April 5, 2024 | — | 12 |
| Re:Zero | April 4, 2016 | — | 66 |
| Reborn as a Vending Machine, I Now Wander the Dungeon | July 5, 2023 | Tokyo MX, AT-X, Nippon Television | 24 |
| Reborn to Master the Blade: From Hero-King to Extraordinary Squire | January 10, 2023 | — | 12 |
| Reborn to Master the Blade: From Hero-King to Extraordinary Squire | November 7, 2020 | — | 2 |
| Reborn! | October 7, 2006 | TV Tokyo | 203 |
| Record of Grancrest War | January 6, 2018 | — | 24 |
| Record of Lodoss War: Chronicles of the Heroic Knight | April 1, 1998 | TV Tokyo | 27 |