| Amazing Soul Games | Developer | |
| Amazing Studio | Developer | |
| Amazing Studios | Developer | |
| Amazon | Publisher | |
| Amazon Game Studios | Developer | |
| Amazon Systems | Developer | |
| Amazura | Developer | |
| Amber | Developer | |
| Amber Smith | Developer | |
| AmberDrop | Developer | |
| AmberIsAQT | Developer | |
| Ambient Melancholy | Developer | |
| Amble | Developer | |
| Amblin Entertainment | Developer | |
| Ambrella | Developer | |
| Ambrosia Software | DeveloperPublisher | |
| Ambrosio | Developer | |
| Amedio | Developer | |
| Amegatron | Developer | |
| Amegpo | Developer | |
| AmelieBy | Developer | |
| Amelyse | Developer | |
| Amenip | Publisher | |
| Ameri | Publisher | |
| America Online | Publisher | |
| American Laser Games | DeveloperPublisher | |
| American Laser Games, Inc. | Developer | |
| American Sammy | DeveloperPublisher | |
| American Sammy NA | Publisher | |
| American Software Laboratories | Publisher | |
| American Softworks | DeveloperPublisher | |
| American Softworks (Cannondale Cup) | Publisher | |
| American TechnÅs (NA) | Publisher | |
| Americana | Publisher | |
| Americana Software | Publisher | |
| Ames Mutton | Developer | |
| AmesyFlo | Developer | |
| Amewater98 | Developer | |
| Amheklerior | Developer | |
| Ami C | Developer | |
| Amicable Animal | Developer | |
| Amin Montazeri | Developer | |
| Amir | Developer | |
| Amir Bayareh | Developer | |
| Amir Matouk | Developer | |
| AmirHammoutene | Developer | |
| Amit Netanel | Developer | |
| Amjad | Developer | |
| AmmoBanditBonzo | Developer | |
| Amnesty Design | Developer | |