| ID | Name | Type |
|---|---|---|
| #813 | American Micro Products Inc | Z |
| #814 | American Technos | Z |
| #815 | Americana Software Ltd | P |
| #23175 | Amerigo de Cesari | + |
| #816 | Amersham Software Ltd | Z |
| #817 | Ametist | ? |
| #818 | Amfas Computer Software Ltd | Z |
| #819 | Amigo | ? |
| #18837 | Amigo Trade Group | P |
| #22968 | Amikosoft | P |
| #820 | Amilton | ? |
| #19021 | Amir [Bearsden Primary 2019] | + |
| #821 | Amisin | - |
| #822 | Amoeba Software | Z |
| #16050 | Amon Cohen | + |
| #823 | Amos Bianchi | ? |
| #16004 | Ampal Computer Services | P |
| #824 | Ampalsoft | Z |
| #825 | Amplicon Micro System Ltd | Z |
| #21402 | Amrit Mann | + |