| ID | Name | Type |
|---|---|---|
| #17020 | AVC (c/o ORT/GEC ITEC) | R |
| #309 | AVC Software | P |
| #310 | AVG Records Ltd | Z |
| #311 | AVL Software | Z |
| #312 | AVP Computing | Z |
| #17963 | AVS | ? |
| #313 | AVS [2] | ? |
| #315 | AW Software | Z |
| #316 | AWA Software | S |
| #317 | AWS | ? |
| #18143 | AYChip | - |
| #318 | AZ | ? |
| #319 | AZPlan Internacional S.A. | Z |
| #320 | Aackosoft | Z |
| #321 | Aardvark Software | Z |
| #322 | Aardvark Software of Hartlepool | Z |
| #15767 | Aaron Day | + |
| #323 | Aasvoguelle Productions | Z |
| #17021 | Abackus Electronic Supplies | H |
| #324 | Abacus Electronics | Z |