| ID | Name | Type |
|---|---|---|
| #1282 | Arnold Hendrick | + |
| #1283 | Arnold Niedrau | + |
| #1284 | Arnold Wheaton Software | Z |
| #1285 | Arnold Woodruff | + |
| #1286 | Arnoldo Mondadori Editore S.p.A. | Z |
| #1287 | Arnošt Večerka | Z |
| #1288 | Arnsvik-Data | A |
| #1289 | Arny | ? |
| #1290 | Arpad Fekete | ? |
| #1291 | Arrakis | Z |
| #1292 | Arrakis Software | Z |
| #1293 | Arrays Inc | Z |
| #1294 | Arrow | Z |
| #1295 | Arrow Books Ltd | Z |
| #17049 | Arrowe Software | M |
| #1296 | Arrowsoft | P |
| #1297 | Ars | ? |
| #1298 | Arsema | ? |
| #1299 | Arsenio Sanchez | + |
| #1300 | Arston | ? |