| AAA | amateur athletic association (skr.) |
|---|---|
| AAD | Assistant Athletic Director |
| AAS | Austrian Atherosclerosis Society |
| AAU | Amateur Athletic Union (skr.) |
| ABC | skr. pre prvú pomoc, Airway-Breathing-Circulation |
| ABP | American Board of Pathology |
| AC | atletický klub (angl.skr.), athletic club (skr.) |
| ADD | Athlete Development Director |
| ADELARD | anglický filozof prírody, prekladateľ, matematik, geometer, astronóm a astrológ, Adelard z Bathu (okolo 1090-po 1160) |
| AIH | American Institute of Homeopathy (skr.) |