| Acronym | Definition |
|---|
| ORS➣Oregon Revised Statutes |
| ORS➣Office of Research Services |
| ORS➣Office of Research Support (various schools) |
| ORS➣Oral Rehydration Solution |
| ORS➣Orthopaedic Research Society |
| ORS➣Oral Rehydration Salts |
| ORS➣Observatoire Régional de la Santé |
| ORS➣Office of Retirement Services (Michigan) |
| ORS➣Output Record Separator |
| ORS➣Operationally Responsive Space (US DoD) |
| ORS➣Open Retail System |
| ORS➣Operation Related Services |
| ORS➣Online Recovery Service |
| ORS➣Object Relational Server |
| ORS➣Oil Recovery System |
| ORS➣Office of Regulatory Staff |
| ORS➣Oneida Research Services (various locations) |
| ORS➣Office of Research and Statistics (Social Security) |
| ORS➣Octopole Reaction System (mass spectrometry) |
| ORS➣Operation Resolute Support (NATO) |
| ORS➣Online Reporting System |
| ORS➣Operational Research Society |
| ORS➣Onion River Sports (Montpelier, VT) |
| ORS➣Oak Ridge Schools (Tennessee) |
| ORS➣O-Ring Seal |
| ORS➣Overseas Research Scholarships (postgraduate award; UK) |
| ORS➣Order Routing System |
| ORS➣Oculo-Respiratory Syndrome |
| ORS➣Office for Recreation and Sport (Australia) |
| ORS➣Ocean Rowing Society |
| ORS➣Obligated Reserve Section |
| ORS➣Operational Research Section |
| ORS➣Occurrence Reporting System |
| ORS➣Omnificent Role-playing System (gaming) |
| ORS➣Office of Records Services (US government) |
| ORS➣Offensive Radar System |
| ORS➣Orbiter Refueling System (NASA) |
| ORS➣Online Reference System |
| ORS➣Online Recruiting Station |
| ORS➣Optical Routing Switch (Corvis) |
| ORS➣Occurrence Reporting Section |
| ORS➣Operational Requirements Statement |
| ORS➣Over Range Station |
| ORS➣Orthopaedic Research Society ROC (Taiwan) |
| ORS➣Open Replicator for Symmetrix (EMC) |
| ORS➣On-Line Reprogramming System |
| ORS➣OpRisk Suite |
| ORS➣Office Repeater Shelf |
| ORS➣Oregon Radiological Society |
| ORS➣Open Registration System |