OIAA
| Acronym | Definition |
|---|---|
| OIAA | Ontario Insurance Adjusters Association (Canada) |
| OIAA | Office of Inter-American Affairs |
| OIAA | Office of International and Academic Affairs (US National Institute of Standards and Technology) |
| OIAA | Office of Information Analysis and Access (US EPA) |
| OIAA | Onion-Induced Antiplatelet Activity |