| Rainbow Fish | January 8, 2000 | Cartoon Network, HBO Family | 26 |
| Rambo: The Force of Freedom | September 15, 1986 | Broadcast syndication | 65 |
| Randy Cunningham: 9th Grade Ninja | August 13, 2012 | Disney XD | 100 |
| Rapunzel's Tangled Adventure | March 10, 2017 | Disney Channel | 59 |
| Raw Toonage | September 19, 1992 | CBS | 12 |
| Ready Jet Go! | February 15, 2016 | PBS Kids | 64 |
| Recess | September 13, 1997 | American Broadcasting Company | 129 |
| Recorded by Arizal | July 13, 2020 | — | 4 |
| Regular Show | September 6, 2010 | Cartoon Network | 261 |
| Regular Show: The Lost Tapes | May 11, 2026 | Cartoon Network | — |
| Ren & Stimpy | July 1, 2024 | Comedy Central | 10 |
| Ren & Stimpy "Adult Party Cartoon" | June 26, 2003 | Spike TV | 6 |
| Republic City Hustle | August 9, 2013 | — | 3 |
| Return to the Planet of the Apes | September 6, 1975 | NBC | 13 |
| Revisioned: Tomb Raider | — | — | 10 |
| Rhyme Time Town | 2020 | Netflix | 6 |
| Rhyme Time Town Singalongs | December 22, 2020 | Netflix | 10 |
| Richie Rich | November 8, 1980 | Boomerang, American Broadcasting Company | 40 |
| Richie Rich | September 14, 1996 | Broadcast syndication | 13 |
| Rick & Steve: The Happiest Gay Couple in All the World | July 10, 2007 | Cartoon Network, Logo TV | 14 |
| Rick and Morty | December 2, 2013 | Adult Swim | 71 |
| Rick and Morty: The Anime | August 16, 2024 | — | 10 |
| Rick and Morty: The Non-Canonical Adventures | — | — | 36 |
| Rickety Rocket | September 1, 1979 | — | 16 |
| Ricochet Rabbit & Droop-a-Long | January 14, 1964 | Broadcast syndication | 23 |
| Ridley Jones | July 13, 2021 | Netflix | — |
| Right Now Kapow | September 19, 2016 | Disney XD | 10 |
| Rimba's Island | June 27, 1994 | — | — |
| Ring Raiders | September 16, 1989 | — | 5 |
| Rise of the Teenage Mutant Ninja Turtles | July 20, 2018 | Nicktoons, Nickelodeon | 26 |
| Road Rovers | September 7, 1996 | Kids' WB | 13 |
| RoboCop | October 1, 1988 | Broadcast syndication | 12 |
| RoboCop: Alpha Commando | September 7, 1998 | Broadcast syndication | 41 |
| RoboGobo | January 3, 2024 | Disney Jr. | 24 |
| RoboSplaat! | — | YouTube | — |
| Robot and Monster | August 4, 2012 | Nickelodeon | 26 |
| Robot Chicken | February 20, 2005 | Adult Swim | 227 |
| Robotech | March 4, 1985 | Broadcast syndication | 85 |
| Robotix | 1985 | — | — |
| Robotomy | October 25, 2010 | Cartoon Network | 10 |
| Rock Paper Scissors | February 11, 2024 | Nickelodeon | 40 |
| Rocket & Groot | March 10, 2017 | — | 12 |
| Rocket Power | August 16, 1999 | Nickelodeon | 64 |
| Rocko's Modern Life | September 18, 1993 | Nickelodeon | 52 |
| Rod Rocket | 1963 | — | 130 |
| Roger Ramjet | September 11, 1965 | Cartoon Network | 156 |
| Rosie's Rules | October 3, 2022 | PBS | — |
| Roughnecks: Starship Troopers Chronicles | August 30, 1999 | Broadcast syndication | 36 |
| Royal Crackers | April 2, 2023 | Adult Swim | 20 |
| Royal Prep Academy | — | Disney Jr., Disney+ | — |
| Rude Dog and the Dweebs | September 16, 1989 | CBS | 13 |
| Ruff-Ruff, Tweet and Dave | February 14, 2015 | CBeebies, Universal Kids | 104 |
| Rugrats | August 11, 1991 | Nickelodeon | 172 |
| Rugrats | May 27, 2021 | Paramount+ | 24 |
| Rugrats Pre-School Daze | January 1, 2006 | Nickelodeon | 4 |
| RWBY | July 18, 2013 | — | 43 |
| S.O.S Fada Manu | — | Discovery Kids | — |
| Saban's Adventures of Oliver Twist | February 1, 1996 | — | 52 |
| Saban’s Gulliver’s Travels | September 8, 1992 | Broadcast syndication | 26 |
| Sabrina the Teenage Witch | September 14, 1970 | CBS | 31 |