| Rainbow: Nisha Rokubō no Shichinin | April 6, 2010 | Nippon Television | 26 |
| Rainy Cocoa | April 5, 2015 | — | 60 |
| Rainy Day Serenade | 2027 | — | — |
| Rakugo Tennyo Oyui | January 5, 2006 | — | 12 |
| Ramen Fighter Miki | July 4, 2006 | — | 12 |
| Rampo Kitan: Game of Laplace | July 2, 2015 | — | 11 |
| Ranking of Kings | October 15, 2021 | Fuji Television | — |
| Ranking of Kings: The Treasure Chest of Courage | April 14, 2023 | — | — |
| Ranma 1⁄2 Nettōhen | October 20, 1989 | Fuji Television | 143 |
| Ranma ½ | April 15, 1989 | Fuji Television | 18 |
| Ranma ½ | October 5, 2024 | Nippon Television | 26 |
| Rascal Does Not Dream of Bunny Girl Senpai | October 4, 2018 | Asahi Television Broadcasting Corporation | 13 |
| Rascal Does Not Dream of Santa Claus | July 5, 2025 | — | — |
| Rascal the Raccoon | January 2, 1977 | Fuji Television | 52 |
| Rave Master | October 13, 2001 | TBS Television | 51 |
| Raven of the Inner Palace | October 1, 2022 | — | 13 |
| Ray the Animation | April 6, 2006 | — | 13 |
| Re-Kan! | April 3, 2015 | — | 13 |
| Re-Main | July 4, 2021 | TV Asahi | 12 |
| Re:_Hamatora | July 8, 2014 | — | 12 |
| Re:bel Robotica | 2027 | — | — |
| 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 |
| Re:ZERO -Starting Life in Another World- Director's Cut | — | — | — |
| Real Drive | April 8, 2008 | Nippon Television | 26 |
| Real Girl | April 4, 2018 | — | 24 |
| Reborn as a Space Mercenary | October 4, 2026 | — | — |
| 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! | October 7, 2006 | TV Tokyo | 203 |
| Rebuild World | — | — | — |
| Rec | February 3, 2006 | — | 9 |
| Recently, My Sister Is Unusual | January 4, 2014 | — | 12 |
| Recommendations from Iwamoto-senpai | July 4, 2026 | — | 12 |
| Record of Grancrest War | January 6, 2018 | — | 24 |
| Record of Lodoss War: Chronicles of the Heroic Knight | April 1, 1998 | TV Tokyo | 27 |
| Record of Ragnarok | June 17, 2021 | — | — |
| Recorder and Randsell | January 6, 2012 | — | 13 |
| Recovery of an MMO Junkie | October 6, 2017 | — | 10 |
| Red Baron | April 5, 1994 | Nippon Television | 49 |
| Red Cat Ramen | July 4, 2024 | — | 12 |
| Red Data Girl | March 16, 2013 | — | 12 |
| Red Garden | October 3, 2006 | — | 22 |
| Red Riding Hood: A Detective Story | 2027 | — | — |
| Red River | July 8, 2026 | — | — |
| Redo of Healer | January 13, 2021 | — | 12 |
| Regalia: The Three Sacred Stars | July 7, 2016 | — | — |
| Reideen | March 3, 2007 | — | — |
| Reideen the Brave | April 4, 1975 | TV Asahi | 50 |
| Reign of the Seven Spellblades | July 8, 2023 | — | 15 |
| Reign: The Conqueror | September 14, 1999 | — | — |
| Reincarnated as a Dragon Hatchling | January 10, 2026 | — | — |
| Reincarnated as a Neglected Noble | July 6, 2025 | — | 12 |
| Reincarnated as a Sword | October 5, 2022 | — | 12 |
| Reincarnated as the Daughter of the Legendary Hero and the Queen of Spirits | October 5, 2025 | — | 12 |
| Reincarnated in a Mafia Dating Sim | — | — | — |
| Reincarnation in the Game World Dan-Katsu | January 2027 | — | — |
| Reiwa no Di Gi Charat | October 7, 2022 | — | 16 |
| Release the Spyce | October 7, 2018 | — | 12 |