OIAP
| Acronym | Definition |
|---|---|
| OIAP | Office of Investigative Agency Policies (US DOJ) |
| OIAP | Office of International Agricultural Programs (various schools) |
| OIAP | Oklahoma Infants Assistance Program (University of Oklahoma) |
| OIAP | Olympus Imported Auto Parts (est. 1977; Alexandria, VA) |