| ID | Name | Type |
|---|---|---|
| #1238 | Argentino Trombin | ? |
| #1239 | Arghsoft Ltda | Z |
| #18963 | Argon | P |
| #1240 | Argonaut Games PLC | Z |
| #1241 | Argonaut Software Ltd | P |
| #18035 | Argos | Z |
| #1242 | Argus Press PLC | Z |
| #1243 | Argus Press Software Ltd | M |
| #1244 | Argus Specialist Publications | Z |
| #1245 | Arh. Zivotic | ? |
| #1246 | Arhon | ? |
| #1247 | Ari Viðar Jóhannesson | ? |
| #1248 | Aria Khatir | ? |
| #1249 | Aribert Deckers | ? |
| #20658 | Ariel Atilio | + |
| #18222 | Ariel Endaraues | + |
| #1250 | Ariel Genis | + |
| #1251 | Ariel Ruiz | + |
| #1252 | Ariel S. Frailich | + |
| #1253 | Ariola Eurodisc S.A. | Z |