| Requiem of the Rose King | January 9, 2022 | — | 24 |
| Rerere no Tensai Bakabon | October 19, 1999 | TV Tokyo | 24 |
| RErideD: Derrida, who leaps through time | October 3, 2018 | — | 12 |
| Rescueman | February 1, 1980 | Fuji Television | 53 |
| Resident Evil: Infinite Darkness | July 8, 2021 | Netflix | — |
| Restaurant to Another World | July 4, 2017 | — | 24 |
| Return of the Dinosaurs | October 1, 1976 | — | — |
| Revenger | January 5, 2023 | — | 12 |
| Revisions | January 10, 2019 | Netflix | — |
| Revolutionary Girl Utena | April 2, 1997 | TV Tokyo | 39 |
| Revue Starlight | July 12, 2018 | — | 12 |
| Rewrite | July 2, 2016 | — | 24 |
| RG Veda | June 1, 1991 | — | 2 |
| RGB Adventure | November 19, 2006 | — | 6 |
| Rich Girl Caretaker | July 5, 2026 | — | 12 |
| Rick and Morty: The Anime | August 16, 2024 | — | 10 |
| Riddle Story of Devil | April 3, 2014 | — | 12 |
| Rideback | March 29, 2009 | Chiba Television Broadcasting | 12 |
| Rifle Is Beautiful | October 13, 2019 | — | 12 |
| Rilakkuma and Kaoru | April 19, 2019 | Netflix | 13 |
| Rilakkuma's Theme Park Adventure | 2022 | Netflix | — |
| Rilu Rilu Fairilu | February 6, 2016 | — | — |
| Rin-ne | April 4, 2015 | NHK Educational TV | 75 |
| Ring ni Kakero | October 6, 2004 | — | 36 |
| Rinkai! | April 9, 2024 | — | 12 |
| Rinkan Club | April 29, 2011 | — | 4 |
| Rinshi!! Ekoda-chan | January 9, 2019 | — | 12 |
| Rio: Rainbow Gate! | January 4, 2011 | — | — |
| Rising Impact | June 22, 2024 | — | — |
| Rita and Whatsit | — | NHK | — |
| Rizelmine | April 3, 2002 | — | 24 |
| Ro-Kyu-Bu! | July 1, 2011 | — | 24 |
| Robby the Rascal | October 7, 1982 | TV Tokyo | 39 |
| RobiHachi | April 8, 2019 | — | 12 |
| Robin Hood no Daibōken | July 29, 1990 | NHK Satellite 2 Television | 52 |
| RoboDz Kazagumo Hen | June 2, 2008 | — | 26 |
| Robokko Beeton | October 12, 1976 | — | 50 |
| RoboMasters: The Animated Series | October 13, 2017 | — | — |
| Robot Girls Z | January 4, 2014 | — | 9 |
| Robot King Daioja | January 31, 1981 | — | — |
| Robotan | October 1, 1966 | — | 104 |
| Robotan | January 6, 1986 | — | 33 |
| Robotics;Notes | October 12, 2012 | Fuji Television | 22 |
| Rock Is a Lady's Modesty | April 3, 2025 | — | 13 |
| Rock Lee & His Ninja Pals | April 3, 2012 | TV Tokyo | — |
| Rocket Girls | February 21, 2007 | WOWOW | 12 |
| Rokka: Braves of the Six Flowers | July 4, 2015 | — | 12 |
| Rokudo's Bad Girls | April 8, 2023 | — | 12 |
| Rokuhōdō Yotsuiro Biyori | April 10, 2018 | — | 12 |
| Roll Over and Die | January 9, 2026 | — | 12 |
| Romance of the Three Kingdoms | 2009 | — | — |
| Romance wa Tsurugi no Kagayaki II | March 25, 2001 | — | 6 |
| Romantic Killer | — | — | 12 |
| Romelia War Chronicle | October 5, 2026 | — | — |
| Romeo and the Black Brothers | January 15, 1995 | — | 33 |
| Romeo × Juliet | April 4, 2007 | — | 24 |
| Ron Kamonohashi | October 2, 2023 | — | 26 |
| Ronin Warriors | April 30, 1988 | — | 39 |
| Ronja, the Robber's Daughter | October 11, 2014 | NHK BS Premium | 26 |
| Room Camp | January 6, 2020 | — | — |