| 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 Technōs (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 | |
| Amni3D | Developer | |
| Amoeba Software | Developer | |
| Amon Twentysix | Developer | |
| Among dots | Developer | |
| Amoniac | Developer | |
| Amorphous | DeveloperPublisher | |
| Amos | Developer | |
| Amos Dsouza | Developer | |
| Amperian | Developer | |
| Ample Software | DeveloperPublisher | |
| AmpleChance | Developer | |
| Amplify Creations | Developer | |
| Amplitude Studios | DeveloperPublisher | |
| Amr Salama | Developer | |
| Amr Zewail | Developer | |
| Amsoft | Publisher | |
| Amstar Electronics | Publisher | |
| AmtHype | Developer | |
| Amtex | DeveloperPublisher | |
| Amuse | DeveloperPublisher | |
| Amuse World | Publisher | |
| AmuseWorld Co. ltd | Publisher | |
| Amusement Vision | Developer | |
| Amuze | Developer | |
| Amuzy | Publisher | |
| Amy Alex Parent | Developer | |
| Amy Clare Fontaine | Developer | |
| Amy Elliott | Developer | |
| Amy Huang | Developer | |
| An Otter Studio | Developer | |
| An Otter Team | Developer | |
| An-Nur Studio | Developer | |
| AnTic054 | Developer | |
| Ana | Developer | |
| Ana Valens | Developer | |
| Ana Wükong | Developer | |
| AnaGF | Developer | |
| Anachronic Games | Developer | |
| Anaconda Games | Developer | |
| Analgesic Productions | DeveloperPublisher | |
| Analisse | Developer | |
| Analog Arcade | Developer | |
| Anamika | Developer | |
| AnankeKeirin | Developer | |
| AnarTeam | DeveloperPublisher | |
| Anarchist Shemale | Developer | |
| Anarchy Enterprises | DeveloperPublisher | |
| AnarchyFox | Developer | |
| AnarchyYogurt | Developer | |
| Anarhija | Developer | |
| Anarkade | Developer | |
| Anarkis Gaming | Developer | |
| Anarteam | Developer | |
| Anas | Developer | |
| Anas Iqbal | Developer | |
| Anas Shwehdy | Developer | |
| AnasMations | Developer | |
| Anastasia Maru | Developer | |
| AnastasiiaRomanova | Developer | |
| Anata | Developer | |
| AnatoleCodeur | Developer | |
| Anatolii | Developer | |
| Anatoliy Loginovskikh | Developer | |
| Anatoly K. | Developer | |
| Anayã Gimenes Ferreira | Developer | |
| Anaïs | Developer | |
| Ancaria Nova | Developer | |
| Anchor | Developer | |
| Anchor Bay Entertainment | Developer | |
| Anchor Inc. | Developer | |
| Anchry | Developer | |
| Ancient | DeveloperPublisher | |
| AncientEntity | Developer | |
| Anciny | Developer | |
| Anco | DeveloperPublisher | |
| Anco Software | DeveloperPublisher | |
| And Garciaz | Developer | |
| AndNow Interactive | Developer | |
| AndS | Developer | |
| Andamiro | Developer | |
| Andamiro U.S.A. Corp | Developer | |
| Andamiro U.S.A. CorpKO | Publisher | |
| Andchan | Developer | |
| Andean Games | Developer | |
| Anderoo99 | Developer | |
| Anders McCarthy | Developer | |
| Anders Nissen | Developer | |
| AndersBj | Developer | |
| Andervall | Developer | |
| Andi Kage | Developer | |
| AndiDev | Developer | |
| AndiFX | Developer | |
| AndiTheMudkip | Developer | |
| Andoar | Developer | |
| Andosha | Developer | |
| Andraconus | Publisher | |
| Andrade Games | Developer | |
| Andrade-Games | Developer | |
| Andragel | Developer | |
| Andras Csibi | Developer | |