Companies
- Ascendant Studios
- Asda
- AsiaSoft
- Asiasoft Corporation Public Company Limited
- Asmodee
- Asmodee Digital
- Asobo Studio
- Aspyr
- Astra Logical
- Astragon Entertainment GmBH
- Astrocade AI
- Asus
- Asylum Entertainment
- AT&T
- Atari
- ATGames
- Atlas Interactive Deutschland GmbH
- Atlas Interactive Group
- Atlus
- Atlus USA
- Atomhawk Design
- Atomic Planet Entertainment
- Atomic Theory
- Atomico Ventures
- Audeze