| Aisystem Tokyo | DeveloperPublisher | |
| Aitem | Developer | |
| Aitor López | Developer | |
| Aixin | Developer | |
| Aizome | Developer | |
| Aj_W | Developer | |
| Ajané | Developer | |
| Ajeb | Developer | |
| Ajey Pandey | Developer | |
| Ajinomoto | Publisher | |
| Ajirog | Developer | |
| Ajvar Studio | Developer | |
| Aka Manto | Developer | |
| Akabaka | Developer | |
| Akabean | Developer | |
| Akabeisoft2 | DeveloperPublisher | |
| Akai Heya Satsujin | Developer | |
| Akaido Arcade Systems (Gavin Wade, Chris Edwards, David R. Cann) | Developer | |
| Akamis | Developer | |
| Akanthaur | Developer | |
| Akaoni Studio | DeveloperPublisher | |
| Akapaya | Developer | |
| Akatsuki Works | DeveloperPublisher | |
| AkdumanDev | Developer | |
| Ake Anderson | Developer | |
| Ake Andersson | Developer | |
| Ake Apps | Developer | |
| Akean | Developer | |
| Akella | DeveloperPublisher | |
| Akemi | Developer | |
| Aki Corp. | Developer | |
| Aki Corporation | DeveloperPublisher | |
| Akies Games | DeveloperPublisher | |
| Akimbo Games | Developer | |
| Akimi Games | Developer | |
| AkioKami | Developer | |
| Akip | Developer | |
| Akipo | Developer | |
| AkiroDev | Developer | |
| Akkara | Developer | |
| Aklom | Developer | |
| Aksel Englund | Developer | |
| Akselmo | Developer | |
| Akseru | Developer | |
| Akshansh | Developer | |
| Akshay Goel | Developer | |
| Akshay Rajput | Developer | |
| Akssus | Developer | |
| Aksys Games | DeveloperPublisher | |
| Aksys GamesNA | Publisher | |