| A Salad Bowl of Eccentrics | April 5, 2024 | — | 12 |
| A Sign of Affection | January 6, 2024 | — | 12 |
| A Simple Thinking About Blood Type | — | — | — |
| A Sister's All You Need | October 8, 2017 | — | 12 |
| A Spirit of the Sun | September 17, 2006 | WOWOW | 2 |
| A Star Brighter Than the Sun | October 2, 2025 | — | — |
| A Tale of the Secret Saint | October 3, 2026 | — | — |
| A Terrified Teacher at Ghoul School! | October 8, 2024 | — | 24 |
| A Town Where You Live | July 13, 2013 | — | 12 |
| A Wild Last Boss Appeared! | October 4, 2025 | Tokyo MX | 12 |
| A.D. Police: To Protect and Serve | April 7, 1999 | TV Tokyo | 12 |
| A3! | January 13, 2020 | — | — |
| Aah! Harimanada | April 23, 1992 | — | 23 |
| ABCiee Working Diary | January 7, 2021 | Asahi Television Broadcasting Corporation | — |
| Absolute Boy | May 21, 2005 | NHK Satellite 2 Television | 26 |
| Absolute Duo | January 4, 2015 | — | 12 |
| ACCA: 13-Territory Inspection Dept. | January 10, 2017 | — | 12 |
| Accel World | April 7, 2012 | — | 24 |
| Ace Attorney | April 2, 2016 | Nippon Television Keiretsu | 47 |
| Ace of Diamond | October 6, 2013 | TV Tokyo | 126 |
| Ace of Diamond Act II | April 2, 2019 | TV Tokyo | 52 |
| Acro Trip | October 2, 2024 | — | 12 |
| Acrobunch | May 5, 1982 | Nippon Television | 24 |
| Action Heroine Cheer Fruits | July 7, 2017 | — | 12 |
| Active Raid | January 7, 2016 | — | 24 |
| Actors: Songs Connection | October 6, 2019 | — | 12 |
| Adachi and Shimamura | October 9, 2020 | — | 12 |
| Adventures of the Little Koala | October 4, 1984 | — | 26 |
| Adventures of the Little Mermaid | 1991 | — | 26 |
| Aesop World | April 5, 1999 | TV Tokyo | 26 |
| Aesthetica of a Rogue Hero | July 6, 2012 | — | 12 |
| African Office Worker | October 7, 2019 | — | 12 |
| Afro Samurai | January 4, 2007 | — | — |
| After School Dice Club | October 2, 2019 | — | 12 |
| After the Rain | January 12, 2018 | Fuji Television | 12 |
| After War Gundam X | April 5, 1996 | — | 39 |
| Afterlost | — | — | — |
| Agatha Christie's Great Detectives Poirot and Marple | July 4, 2004 | NHK General TV | — |
| Age 12: A Little Heart-Pounding | April 4, 2016 | — | 24 |
| Agents of the Four Seasons: Dance of Spring | March 29, 2026 | — | 14 |
| Aggretsuko | April 20, 2018 | Netflix | — |
| Aguu: Genius Dolls | July 10, 2018 | — | — |
| Ah My Buddha | July 1, 2005 | — | 24 |
| Aharen-san Is Indecipherable | April 1, 2022 | — | 12 |
| Ahiru no Sora | October 2, 2019 | — | 50 |
| Aho-Girl | July 4, 2017 | — | 12 |
| Ai no Gakko Cuore Monogatari | April 3, 1981 | — | 26 |
| AI no Idenshi | July 8, 2023 | — | 12 |
| Ai Tenchi Muyo! | 2014 | — | — |
| Ai Yori Aoshi | April 10, 2002 | — | 36 |
| Ai-Mai-Mi | January 3, 2013 | — | 13 |
| Ai-Mai-Mi: Mousou Catastrophe | July 8, 2014 | — | 12 |
| Ai-Mai-Mi: Surgical Friends | January 3, 2017 | — | 12 |
| Aikatsu Friends! | April 5, 2018 | — | 76 |
| Aikatsu Stars! | April 7, 2016 | — | 100 |
| Aikatsu! | October 8, 2012 | TV Tokyo | 178 |
| Aim for the Ace! | October 5, 1973 | — | 26 |
| Air | January 6, 2005 | — | 13 |
| Air Gear | April 4, 2006 | TV Tokyo | 25 |
| Air Master | April 2, 2003 | — | 27 |