| Acronym | Definition |
|---|
| OSIA➣Order Sons of Italy in America |
| OSIA➣On Site Inspection Agency |
| OSIA➣Orlando Sanford International Airport (Orlando, FL) |
| OSIA➣Open Source Industry Association |
| OSIA➣On-Site Inspection Activity (US DoD) |
| OSIA➣Open Source Industry Australia Limited (Australia) |
| OSIA➣One Stop Italian America (online community) |
| OSIA➣Open Standards and Internet Association |
| OSIA➣Ohio Seed Improvement Association |
| OSIA➣Oregon Self-Insurers Association |
| OSIA➣Ohio Sheep Improvement Association |
| OSIA➣Observers SWS Interactive Analysis |
| OSIA➣Office of the Smithsonian Institution Archives |
| OSIA➣Oregon Snowsport Industries Association |
| OSIA➣Office Services and Information Agency |
| OSIA➣Outstanding Student Instructor Awards |
| OSIA➣Ottawa Services Insurance Agency (Canada) |
| OSIA➣Open Systems Interconnection Architecture |
| OSIA➣Order of the Society of Italian-Americans |