| Open Season: Call of Nature | November 3, 2023 | Family Channel | — |
| Operavox | — | — | 6 |
| Orange Moo-Cow | September 5, 2018 | — | 208 |
| Ori-Princess | — | CCTV-14 Children, Haha-Toonmax TV | — |
| Ormhildur the Brave | January 3, 2026 | RÚV | 26 |
| Orson and Olivia | February 8, 1994 | Canal+ | 26 |
| Oscar's Oasis | February 28, 2011 | Canal+ | 78 |
| Oscar, der Ballonfahrer | 2010 | — | 26 |
| Oswald | August 20, 2001 | Nickelodeon, Treehouse TV, Nick Jr. Channel, Tiny Living | 26 |
| Oswaldo | October 11, 2017 | Cartoon Network | 13 |
| Ot En Bilotte | October 2, 1994 | VPRO | 15 |
| Our Cartoon President | February 11, 2018 | Showtime | 36 |
| Out There | April 19, 2013 | IFC | 10 |
| Over the Divine Realms | 2025 | IQIYI | 17 |
| Over the Garden Wall | November 3, 2014 | Cartoon Network | 10 |
| Ozie Boo! | April 15, 2006 | Playhouse Disney | — |
| Ozzy & Drix | September 14, 2002 | The WB | 26 |
| Pablo the Little Red Fox | September 28, 1999 | CBeebies | 52 |
| Pac-Man | September 25, 1982 | American Broadcasting Company | 43 |
| Pac-Man and the Ghostly Adventures | June 15, 2013 | Disney XD | 52 |
| Pacific Rim: The Black | March 4, 2021 | Netflix | 14 |
| Packages from Planet X | July 13, 2013 | Disney XD | 26 |
| Paco, Nouky et Lola | September 3, 2008 | France 5 | 52 |
| Paddington | January 5, 1976 | British Broadcasting Corporation, BBC Children's and Education | 56 |
| Paddington Bear | December 2, 1989 | Broadcast syndication | 13 |
| Panchatantra Mantra | 2017 | — | — |
| Panda and Rooster | — | CCTV-14 Children | 52 |
| Pandamonium | September 18, 1982 | CBS | 13 |
| Pandora and Plato | — | ERT1, ANT1, Star Channel | — |
| Pantheon | September 1, 2022 | AMC+ | 16 |
| Pantie Hero | — | MBC TV | — |
| Papa Beaver's Storytime | 1993 | France 3 | 156 |
| Papa Dog | — | — | — |
| Papa Pipi | — | — | — |
| Papawa | 2006 | — | 104 |
| Paper Tales | — | Nickelodeon CIS and Baltics, Carousel, Mult, Tlum HD | 78 |
| Paprika | November 18, 2017 | France 5 | 78 |
| Papyrus | August 19, 1999 | TF1, Toon Disney | 52 |
| Paradise PD | August 31, 2018 | Netflix | 43 |
| Paranormal Action Squad | — | YouTube Premium | 8 |
| Partie de campagne | June 14, 2024 | KiKA | 52 |
| Partridge Family 2200 A.D. | September 7, 1974 | CBS | 16 |
| Pat & Stan | 2004 | TF1 | 363 |
| Pat the Dog | April 7, 2017 | La Trois | 155 |
| Patrol 03 | December 5, 1997 | RTL Zwei, Télétoon, France 3 | 26 |
| Paw Patrol | August 12, 2013 | Nickelodeon | 254 |
| Paw Paws | October 31, 1985 | Broadcast syndication | 21 |
| Paws & Palaces | — | IQIYI | 16 |
| PB&J Otter | March 15, 1998 | Playhouse Disney, Disney Jr. | 65 |
| Peanuts | November 9, 2014 | NHK Educational TV | 104 |
| Pearlie | September 19, 2009 | Network 10, YTV | 26 |
| Pecola | September 3, 2001 | Cartoon Network | 26 |
| Peep and the Big Wide World | April 12, 2004 | TLC, Discovery Kids, TVOKids, PBS Kids | 55 |
| PeePooDo & The Super Fuck Friends | — | Blackpills | 18 |
| Peg + Cat | October 7, 2013 | PBS, PBS Kids | 63 |
| Pelswick | October 2, 2000 | CBC Television | 26 |
| Penn Zero: Part-Time Hero | December 5, 2014 | Disney XD, Disney XD | 35 |
| Pepee | January 2008 | TRT Çocuk | 76 |
| Peppa Pig | May 31, 2004 | Channel 5, Nick Jr. Channel, MediaCorp Channel 5 | 394 |
| Pepper Ann | September 13, 1997 | American Broadcasting Company, Disney Channel, UPN | 65 |