| Panchira Teacher | — | — | 2 |
| Panda-Z | April 12, 2004 | — | — |
| Pandora Hearts | April 2, 2009 | TBS Television | 25 |
| Pandora in the Crimson Shell | January 8, 2016 | — | 12 |
| Pani Poni Dash! | July 4, 2005 | — | 26 |
| Pants Pankuro | — | NHK Educational TV | — |
| Panty & Stocking with Garterbelt | October 2, 2010 | — | 14 |
| Panyo Panyo Di Gi Charat | January 5, 2002 | — | — |
| Panzer World Galient | October 5, 1984 | — | — |
| Papa Datte, Shitai | January 7, 2019 | Tokyo MX | — |
| Papa Katsu! | December 24, 2021 | — | — |
| Papa no Iu Koto o Kikinasai! | January 11, 2012 | — | 12 |
| Papillon Rose | February 9, 2006 | — | 6 |
| Paradise Kiss | October 13, 2005 | Fuji Television | 12 |
| Paradox Live: The Animation | October 3, 2023 | — | — |
| Parallel World Pharmacy | July 10, 2022 | — | 12 |
| Paranoia Agent | February 2, 2004 | WOWOW | 13 |
| PaRappa the Rapper | April 14, 2001 | Fuji Television | 30 |
| Parasol Henbē | October 2, 1989 | NHK General TV | 200 |
| Parasyte: The Maxim | October 9, 2014 | — | 24 |
| Pardon the Intrusion, I'm Home! | April 8, 2026 | — | 12 |
| Pass the Monster Meat, Milady! | October 3, 2025 | — | 12 |
| Pastel Memories | January 8, 2019 | — | 12 |
| Pastel Yumi, the Magic Idol | March 7, 1986 | — | 25 |
| Patalliro Saiyūki! | June 5, 2005 | — | 27 |
| Patalliro! | April 8, 1982 | — | 49 |
| Patlabor: The TV Series | October 11, 1989 | — | 47 |
| Patta Potta Monta | August 1, 2006 | Chiba Television Broadcasting | — |
| Paul's Miraculous Adventure | October 3, 1976 | Fuji Television | 50 |
| Peacemaker Kurogane | October 7, 2003 | — | 24 |
| Peach Boy Riverside | July 1, 2021 | — | 12 |
| Peach Girl | January 8, 2005 | TV Tokyo | 25 |
| Peanuts | November 9, 2014 | NHK Educational TV | 104 |
| Pecola | September 3, 2001 | Cartoon Network | 26 |
| Penguin Musume | — | — | — |
| Penguindrum | July 8, 2011 | — | 24 |
| Perman | April 2, 1967 | — | 54 |
| Perman | April 4, 1983 | — | 526 |
| Peropero Sparkles | — | — | — |
| Persia, the Magic Fairy | July 6, 1984 | — | 48 |
| Persona 4: The Animation | October 7, 2011 | — | 26 |
| Persona 4: The Golden Animation | July 10, 2014 | — | 12 |
| Persona 5: The Animation | April 8, 2018 | — | 26 |
| Persona: Trinity Soul | January 5, 2008 | — | 26 |
| Personal Computer Travel Tanteidan | October 1, 1981 | — | — |
| PES: Peace Eco Smile | — | — | — |
| Pet | January 6, 2020 | — | 13 |
| Pet Shop of Horrors | March 2, 1999 | — | 4 |
| Petals of Reincarnation | April 3, 2026 | — | 13 |
| Peter Grill and the Philosopher's Time | July 11, 2020 | — | 24 |
| Peter Pan and the Pirates | September 8, 1990 | Fox Kids | 65 |
| Petite Princess Yucie | September 30, 2002 | NHK Satellite 2 Television | 26 |
| Petopeto-san | July 9, 2005 | — | 13 |
| Phantasy Star Online 2 the Animation | January 8, 2016 | — | — |
| Phantasy Star Online 2: Episode Oracle | October 7, 2019 | — | 25 |
| Phantom Busters | 2027 | — | — |
| Phantom in the Twilight | July 10, 2018 | — | 12 |
| Phantom of the Idol | July 1, 2022 | — | 10 |
| Phantom Quest Corp. | — | — | 4 |
| Phantom Thief Jeanne | February 13, 1999 | TV Asahi | 44 |