| _Summer | October 27, 2006 | — | 2 |
| A Bunch of Munsch | December 7, 1991 | CTV Television Network | 13 |
| A Centaur's Life | July 9, 2017 | Tokyo MX | 12 |
| A Certain Dark Item | October 10, 2026 | — | — |
| A Certain Magical Index | October 4, 2008 | — | 74 |
| A Certain Scientific Accelerator | July 12, 2019 | — | 12 |
| A Certain Scientific Railgun | 2009 | — | 73 |
| A Channel | April 8, 2011 | TV Asahi | 12 |
| A Condition Called Love | April 4, 2024 | — | 12 |
| A Couple of Cuckoos | April 24, 2022 | — | — |
| A Dark Rabbit Has Seven Lives | July 8, 2011 | — | 12 |
| A Destructive God Sits Next to Me | January 11, 2020 | — | 12 |
| A Foreign Love Affair | — | — | — |
| A Galaxy Next Door | April 9, 2023 | — | 12 |
| A Gatherer's Adventure in Isekai | October 7, 2025 | — | 12 |
| A Gentle Noble's Vacation Recommendation | January 8, 2026 | — | 12 |
| A Girl & Her Guard Dog | September 29, 2023 | — | 13 |
| A Good Librarian Like a Good Shepherd | October 8, 2014 | — | 12 |
| A Herbivorous Dragon of 5,000 Years Gets Unfairly Villainized | July 30, 2022 | — | — |
| A Journey Through Another World | July 7, 2024 | — | 12 |
| A Kind of Magic | 2008 | France 3 | 78 |
| A kockásfülű nyúl | August 26, 1977 | — | — |
| A legkisebb ugrifüles | 1975 | Magyar Televízió | 26 |
| A Little Curious | 1998 | HBO | 43 |
| A Little Snow Fairy Sugar | October 2, 2001 | TBS Television | 24 |
| A Livid Lady's Guide to Getting Even | July 6, 2026 | — | 12 |
| A Mangaka's Weirdly Wonderful Workplace | October 6, 2025 | — | 13 |
| A Misanthrope Teaches a Class for Demi-Humans | January 11, 2026 | — | 13 |
| A Miss Mallard Mystery | September 4, 2000 | Cartoon Network | 26 |
| A Mortal's Journey | — | Bilibili | — |
| A nagy ho-ho-horgász | 1982 | — | — |
| A Ninja and an Assassin Under One Roof | April 10, 2025 | — | 12 |
| A Nobody's Way Up to an Exploration Hero | July 6, 2024 | — | 12 |
| A Pen, Handcuffs, and a Common-Law Marriage | January 2027 | — | — |
| A Penguin's Troubles | April 5, 2008 | — | — |
| A Place Further Than The Universe | January 2, 2018 | AT-X | 13 |
| A Playthrough of a Certain Dude's VRMMO Life | October 3, 2023 | — | 12 |
| A Portrait Of Jianghu: Bad Guys | — | — | — |
| A Pup Named Scooby-Doo | September 10, 1988 | American Broadcasting Company | 30 |
| A Returner's Magic Should Be Special | October 8, 2023 | — | 12 |
| 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 Dark & Grimm | October 8, 2021 | Netflix | 10 |
| A Tale of the Secret Saint | October 3, 2026 | — | — |
| A Terrified Teacher at Ghoul School! | October 8, 2024 | — | 24 |
| A Thousand and One... Americas | 1989 | — | 26 |
| A Town Called Panic | 2002 | — | 20 |
| A Town Where You Live | July 13, 2013 | — | 12 |
| A Town Where You Live | January 17, 2014 | — | 2 |
| A Town Where You Live: Twilight Intersection | March 16, 2012 | — | 2 |
| A Wild Last Boss Appeared! | October 4, 2025 | Tokyo MX | 12 |
| A Will Eternal | — | Tencent Video | — |
| A World Without... | August 30, 2019 | Internet | — |
| A-jang.com | — | KBS 2TV | 13 |
| A.D. Police: To Protect and Serve | April 7, 1999 | TV Tokyo | 12 |
| A.I.C.O. -Incarnation- | 2018 | Netflix | — |