| AADL | Architecture Analysis and Design Language | |
| AADL | Architecture Analysis Design Language | |
| AADL | Architecture Analysis Description Language | |
| AADL | Architecture Analysis and Description Language | |
| AADL | Architecture Analysis & Design Language | |
| AAL | Australasian Association for Literature | |
| AALA | Advancing Academic Language for All | |
| AALA | Asian Association for Language Assessment | |
| AALC | Australasian Association of Language Companies | |
| AALL | Association for Academic Language and Learning | |
| AALS | A A Language Services | |
| AAPPL | Assessment of Performance toward Proficiency in Languages | |
| AASL | All About Speech Language | |
| AAW | Antarctic Artists and Writers | |
| AAW | An Association of Writers | |
| AAWC | Antarctic Artists and Writers Collective | |
| AAWP | Australasian Association of Writing Programs | |
| AAWW | Asian American Writers’ Workshop | |
| ABBL | A Bridge Bidding Language | |
| ABC | Always Be Creative | |
| ABCI | Austrian Bilingual Classroom Initiative | |
| ABCL | Audio Barix Control Language | |
| ABCL | Actor-Based Concurrent Language | |
| ABCL | AllThingsTalk Binary Conversion Language | |
| ABEL | Advanced Boolean Equation Language | |
