| Acronym | Definition |
|---|
| OSIR➣Osrodek Sportu I Rekreacji (Polish: Sports and Recreation) |
| OSIR➣Oil Spill Intelligence Report |
| OSIR➣Open Source Information Retrieval (workshop) |
| OSIR➣Office of Scientific Investigation and Research |
| OSIR➣Organization for Scientific Investigation and Research |
| OSIR➣Objective Status Issues Recommendations |
| OSIR➣Office of Information Services and Resources |
| OSIR➣Outbreak and Surveillance Investigation Report (electronic journal; International Field Epidemiology Training Program; Thailand) |