| Don Aason Australia | Gerhard Abel Germany | Bart Achille US |
| Charles Adams US | Peter Adolf US | Herb Ailsleiger US |
| Bill Aldrich US | Tiggar Alldus US | Altech Anodizing Canada |
| Scott Alwine US | D. P. & J. R. Amiable UK | Rich Amling US |
| Jon Amo US | T. E. Amos US | Jeff Anderson US |
| Tim Anderson US | Don Angel US | Sonny Angel US |
| Don Anson Australia | Ron Anthony US | Jean-Charles Ardisson France |
| ARHMA US | Arias US | Peter Arnemann US |
| Arrow Machine Canada | Alfred C. Ashdown UK | Ray Atkinson UK |
| R. G. Atkinson UK | G. D. W. Axe UK | Jim Aylesworth US |