- YAAC stands for Young Adult Advisory Council (various locations)
- YAAC stands for York-Adams Area Council (Pennsylvania)
- YAAC stands for Yet Another Audio Converter (software)
- YAAC stands for Young Alumni Advisory Committee (various locations)
- Yaac stands for Yet Another Compiler Compiler
- YAAC stands for Yet Another APRS (Automatic Packet Reporting System) Client (amateur radio software)
- YAAC stands for Yuma Area Agriculture Council (Yuma, AZ)
YAAC