| ID | Name | Type |
|---|---|---|
| #17055 | Autoram | I |
| #1399 | Avalon | ? |
| #1400 | Avalon Computing | S |
| #22532 | Avalon Hill Game Company | P |
| #1401 | Avalon Software Ltd | M |
| #1402 | Avatar | ? |
| #1403 | Aventuras AD S.A. | Z |
| #1404 | Aventuras AM | Z |
| #1405 | Aventuras Espanolas | ? |
| #1406 | Aventuras Level 10 | ? |
| #1407 | Aventuras Mitologicas S.A. | Z |
| #22608 | Avi Margalit | + |
| #1408 | Aviation Computer Services | Z |
| #17056 | Avid Computer Centres | H |
| #19634 | Avlisoft | P |
| #20495 | AvlixA | - |
| #1409 | Avon Books | Z |
| #17057 | Avon Micro Centre | R |
| #1410 | Avonsoft | Z |
| #1411 | Awk Software | Z |