| Acronym | Definition |
|---|
| OIAC➣Offshore Industry Advisory Committee (formerly Oil Industry Advisory Committee; UK) |
| OIAC➣Oklahoma Indian Affairs Commission (Oklahoma City, OK) |
| OIAC➣Oil Industry Advisory Committee (now Offshore Industry Advisory Committee; UK) |
| OIAC➣Office of Information Assurance and Compliance (US Army) |
| OIAC➣Olympic Identity and Accreditation Card |