| Abbreviation | Definition |
|---|---|
| AAS | Atelier Architecture Scenography |
| AAT | Architecture Aptitude Test |
| AAT | Art Architecture Thesaurus |
| AATO | Association of Architectural Technologists of Ontario |
| AAW | Architecture Award Winer |
| AB | Architecture Building |
| ABAAG | Architectural Barriers Act Accessibility Guidelines |
| ABAAS | Architectural Barriers Act Accessibility Standards |
| ABACUS | Architecture Based Analysis Communication and Understanding of Systems |
| ABCD | Analysis of Building Climatic Data |
| ABDS | Architectural Building Design Services |
| ABH | Architectural Builders Hardware |
| ABI | Architecture Billings Index |
| ABI | At Bit Inclination |
| ABOV. | above |
| ABRI | Architecture and Building Research Institute |
| ABTA | Absolute Background Textures Archive |
| ABWF | Architectural Builders Works and Finishes |
| AC | Alternating Current |
| ACAG | Advanced Computer Architecture Group |