EHAA
| Acronym | Definition |
|---|---|
| EHAA | Euskal Herriko Agintaritzaren Aldizkarian |
| EHAA | Every Hand An Adventure (bridge game bidding) |
| EHAA | EH Aviation Advisors (Switzerland) |
| EHAA | Edmonton Homebuilt Aircraft Association (Edmonton, Alberta, Canada) |
| EHAA | Enzymatically Hydrolyzable Amino Acid |
| EHAA | English Harbour Arts Association (Canada) |
| EHAA | Estimates of High Avidity Antibodies (virology) |