| ABA-NOVÁK | maďarský maliar a grafik, autor monumentálnych nástenných obrazov (Vilmos, 1894-1949) |
|---|---|
| ABETTI | taliansky astronóm (Antonio, 1846-1928) |
| ABETTI | taliansky astronóm (Giorgio, 1882-1982) |
| ABRUZZY | región v Taliansku |
| ADA | Australian Dental Association |
| ADD | Administration on Developmental Disabilities |
| ADD | Army Digital Division |
| ADP | Accidental Damage Protection |
| ADP | Antenna Digital Positioner |
| AEC | Army Environmental Center |