| RahXephon | January 21, 2002 | — | 26 |
| Raideen the Superior | October 2, 1996 | — | 38 |
| Rail Romanesque | October 3, 2020 | — | 25 |
| Rail Wars! | July 4, 2014 | TBS Television | 12 |
| Rainbow Brite | June 27, 1984 | Broadcast syndication | 13 |
| Rainbow Bubblegem | — | Tencent Video | — |
| Rainbow Butterfly Unicorn Kitty | January 27, 2019 | Nickelodeon, Nicktoons | 26 |
| Rainbow Days | January 10, 2016 | — | 24 |
| Rainbow Fish | January 8, 2000 | Cartoon Network, HBO Family | 26 |
| Rainbow Ruby | April 23, 2016 | CCTV-14 Children, Family Jr., EBS 1TV, Milkshake! | 52 |
| Rainbow Sea | — | — | 26 |
| Rainbow Toons! | — | — | — |
| Rainbow: Nisha Rokubō no Shichinin | April 6, 2010 | Nippon Television | 26 |
| Rainy Cocoa | April 5, 2015 | — | 60 |
| Rainy Day Serenade | 2027 | — | — |
| Raised by Demons: Panda Li | July 29, 2026 | — | — |
| Rakshasa Street | April 28, 2016 | — | — |
| Rakugo Tennyo Oyui | January 5, 2006 | — | 12 |
| Ralf the Record Rat | September 19, 2003 | Vrak.TV, Canal J, YTV | 104 |
| Rambo: The Force of Freedom | September 15, 1986 | Broadcast syndication | 65 |
| Ramen Fighter Miki | July 4, 2006 | — | 12 |
| Rampo Kitan: Game of Laplace | July 2, 2015 | — | 11 |
| Randy Cunningham: 9th Grade Ninja | August 13, 2012 | Disney XD | 100 |
| 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 |
| Rapunzel's Tangled Adventure | March 10, 2017 | Disney Channel | 59 |
| Rascal Does Not Dream | — | — | — |
| 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 |
| Rasen Kairō | June 28, 2002 | — | 2 |
| Rastamouse | January 31, 2011 | British Broadcasting Corporation, CBeebies | 104 |
| Rat-Man | November 20, 2006 | Rai 2 | 52 |
| Rated A for Awesome | September 3, 2011 | YTV | 26 |
| Ratz | September 21, 2003 | France 3 | 52 |
| Rave Master | October 13, 2001 | TBS Television | 51 |
| Raven of the Inner Palace | October 1, 2022 | — | 13 |
| Raw Toonage | September 19, 1992 | CBS | 12 |
| Ray the Animation | April 6, 2006 | — | 13 |
| Rayearth | July 25, 1997 | — | 3 |
| Raymond | September 9, 2007 | Canal+ | 78 |
| Re-Kan! | April 3, 2015 | — | 13 |
| Re-Main | July 4, 2021 | TV Asahi | 12 |
| Re: Cutie Honey | July 24, 2004 | — | 3 |
| 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 | — | — | — |
| Read or Die | — | — | — |
| Ready Jet Go! | February 15, 2016 | PBS Kids | 64 |
| Real Drive | April 8, 2008 | Nippon Television | 26 |
| Real Girl | April 4, 2018 | — | 24 |
| ReBoot | September 10, 1994 | YTV | 47 |
| 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 |