| AAB | Advertising Association of Baltimore |
|---|---|
| ABA | American Basketball Association |
| ABM | anti-balistic missile (skr.), protibalistická raketa (angl.skr.) |
| ABM | Asynchronous Balanced Mode |
| ABT | Air Ballast Tank |
| ADE | balkánske sídlo |
| AEK | aténsky futbalový klub |
| AEL | cyperský futbalový klub (Limassol) |
| AFA | Amateur Football Association |
| AFC | Amateur Football Club |