| Name | Type | Country | Number |
|---|---|---|---|
| ABC ShuppanABC出版 | Editor | Japan | 3 |
| Akaneshinsha茜新社 | Editor | Japan | 7 |
| Akata | Editor | France | 25 |
| Akileos | Editor | France | 6 |
| Akitashoten秋田書店 | Editor | Japan | 35 |
| AlphaPolisアルファポリス | Editor | Japan | 2 |
| Ankama | Editor | France | 5 |
| Asahi Shimbun Shuppann朝日新聞出版 | Editor | Japan | 2 |
| ASCII MEDIA WORKSアスキー・メディアワークス | Editor | Japan | 51 |
| Asuka | Editor | France | 5 |
| Asukashinsha飛鳥新社 | Editor | Japan | 0 |
| Atelier Utopique | Editor | France | 1 |