| YAA | Yorozu Automotive Alabama 
| Others |
| YAA | Young Achievement Australia
| Others |
| YAA | Young Anime Artists
| Others |
| YAA | Young Artists of America
| Others |
| YAA | Young At Art
| Others |
| YAA | Your Auto Advocate
| Others |
| YAA | Youth Accommodation Association
| Others |
| YAAA | Yorkton Antique Auto Association
| Others |
| YAAAS | Yet Another as a Service
| Others |
| YAAB | Yet Another Address Book
| Others |
| YAAB | Yet Another Auto Brightness
| Others |
| YAAB | Yet Another AVR Board
| Others |
| YAAB | You Are A B****
| Others |
| YAAB | Young Adult Advisory Board
| Others |
| YAAB | Youth and Activities Building
| Others |
| YAAC | Another Awesome CV
| Others |
| YAAC | Yakima Area Asthma Coalition
| Others |
| YAAC | Yet Another Access Counter
| Others |
| YAAC | Yet Another APRS Client
| Others |
| YAAC | York Adams Area Council
| Others |
| YAAC | Young Adult Action Council
| Others |
| YAAC | Young Adult Activity Club
| Others |
| YAAC | Young Adult Advisory Committee
| Others |
| YAAC | Young Adult Advisory Council
| Others |
| YAAC | Young AFCEAN Advisory Council
| Others |
| YAAC | Young Alliance Against Cancer
| Others |
| YAAC | Young Alumni Advisory Committee
| Others |
| YAAC | Young Alumni Advisory Council
| Others |
| YAAC | Youth Adult Advisory Council
| Others |
| YAAC | Youth Advisory Advocacy Council
| Others |
| YAAC | Youth Apprenticeship Advisory Committee
| Others |
| YAAC | Yuma Area Agriculture Council
| Others |
| YAAD | Yet Another Accidental Death
| Others |
| YAAD | Yet Another Annoying Death
| Others |
| YAAF | Yet Another Application Framework
| Others |
| YAAF | You Are A Fool
| Others |
| YAAG | You Are Actual Garbage
| Others |
| YAAG | You Are Actually Garbage
| Others |
| YAAI | You Are An Idiot
| Others |
| YAAM | Yeast Amino Acid Modification
| Others |
| YAAM | Yet Another Android Market
| Others |
| YAAM | Yet Another Asset Manager
| Others |
| YAAM | Young African Art Market
| Others |
| YAAM | Young African Artists Market
| Others |
| YAAM | Young and African Arts Market
| Others |
| YAAM | Youth African Arts Market
| Others |
| YAAP | Yet Another Authentication Protocol
| Others |
| YAARS | Young Australians Alcohol Reporting System
| Others |
| YAAS | Yachats Academy of Arts and Sciences
| Others |
| YAAS | Yet Another Acronym Server
| Others |