Companies
- Apple
- Arc System Works
- ArenaNet
- Arkane Austin
- Arkane Lyon
- Arkane Studios
- Armature Studio
- Arrowhead Game Studios
- Artificial Mind and Movement
- Artisan Studios
- Arzest Corporation
- Ascendant Studios
- Asobo Studio
- Aspyr
- Asus
- Atari
- Atlus
- Atlus USA
- Atomic Wolf
- Audeze
- Auroch Digital
- Autumn Games
- Avalanche Software
- Avalanche Studios
- Awaken Realms