| Rizelmine | April 3, 2002 | — | 24 |
| Ro-Kyu-Bu! | July 1, 2011 | — | 24 |
| Road Rovers | September 7, 1996 | Kids' WB | 13 |
| Roary the Racing Car | May 7, 2007 | Nickelodeon, Channel 5, Nick Jr. | 104 |
| Rob the Robot | September 7, 2010 | — | 104 |
| 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 |
| Robin Hood: Mischief in Sherwood | June 9, 2016 | Discovery Family | 156 |
| Robinson Sucroe | January 17, 1994 | Canal+ | 26 |
| Robo Story | — | Canal+ | 52 |
| Robocar Poli | February 28, 2011 | EBS 1TV | 52 |
| RoboCop | October 1, 1988 | Broadcast syndication | 12 |
| RoboCop: Alpha Commando | September 7, 1998 | Broadcast syndication | 41 |
| RoboDz Kazagumo Hen | June 2, 2008 | — | 26 |
| RoboGobo | January 3, 2024 | Disney Jr. | 24 |
| Robokko Beeton | October 12, 1976 | — | 50 |
| RoboMasters: The Animated Series | October 13, 2017 | — | — |
| Roboroach | January 8, 2002 | Télétoon | 52 |
| RoboSplaat! | — | YouTube | — |
| Robot and Monster | August 4, 2012 | Nickelodeon | 26 |
| Robot Chicken | February 20, 2005 | Adult Swim | 227 |
| Robot Girls Z | January 4, 2014 | — | 9 |
| Robot King Daioja | January 31, 1981 | — | — |
| Robot Trains | — | — | — |
| Robotan | October 1, 1966 | — | 104 |
| Robotan | January 6, 1986 | — | 33 |
| Robotboy | November 1, 2005 | Cartoon Network, France 3 | 52 |
| Robotech | March 4, 1985 | Broadcast syndication | 85 |
| Robotics;Notes | October 12, 2012 | Fuji Television | 22 |
| Robotix | 1985 | — | — |
| Robotomy | October 25, 2010 | Cartoon Network | 10 |
| Robozuna | October 18, 2018 | ITV | 20 |
| Rock Is a Lady's Modesty | April 3, 2025 | — | 13 |
| Rock Lee & His Ninja Pals | April 3, 2012 | TV Tokyo | — |
| Rock Paper Scissors | February 11, 2024 | Nickelodeon | 40 |
| Rocket & Groot | March 10, 2017 | — | 12 |
| Rocket Girls | February 21, 2007 | WOWOW | 12 |
| Rocket Monkeys | January 10, 2013 | Nickelodeon, Cartoon Network, Cartoon Network | 65 |
| Rocket Power | August 16, 1999 | Nickelodeon | 64 |
| Rocket Robin Hood | October 9, 1966 | — | 52 |
| Rocko's Modern Life | September 18, 1993 | Nickelodeon | 52 |
| Rod 'n' Emu | January 8, 1991 | ITV | 13 |
| Rod Rocket | 1963 | — | 130 |
| Roger | — | France 4 | — |
| Roger Ramjet | September 11, 1965 | Cartoon Network | 156 |
| 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 |
| Rolando Locomotov, He's the master! | 2012 | — | — |
| Rolie Polie Olie | October 4, 1998 | Playhouse Disney, Disney Jr. | 78 |
| Roll No 21 | November 14, 2010 | Cartoon Network | — |
| Roll Over and Die | January 9, 2026 | — | 12 |
| RollBots | February 7, 2009 | YTV | 26 |
| 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 |