| Acronym | Definition |
|---|
| UIAA➣University of Illinois Alumni Association |
| UIAA➣Union Internationale des Associations d’Alpinisme (French: International Union Mountaineering Associations; Switzerland) |
| UIAA➣United Irish American Association (Buffalo, NY) |
| UIAA➣Utah Insurance Agency Alliance |
| UIAA➣Uqqurmiut Inuit Artists' Association (est. 1988) |