| AAB | Application Architecture Blueprint |
|---|---|
| AAD | Atomic Absorption Detector |
| AAS | Alternate Architecture Study |
| ABA | Agent Based Architecture |
| ADÁMEK | český dôstojník, podplukovník československého letectva, entomológ, hlavne lepidopterológ (Adolf, 1903-1949) |
| ADD | Architectural Design Document |
| ADM | Architecture Development Method |
| ADP | Accidental Damage Protection |
| AE | Architecture Engineering |
| AED | Atomic Emission Detector |