| Acronym | Definition |
|---|
| OSR➣Office of State Revenue (Australia) |
| OSR➣Old School RuneScape (video game) |
| OSR➣Offshore Special Regulations (International Sailing Federation) |
| OSR➣Office Service Release |
| OSR➣Oracle Service Registry |
| OSR➣Optical Switch Router |
| OSR➣Oilseed Rape |
| OSR➣OEM Service Release |
| OSR➣Orchestre de La Suisse Romande |
| OSR➣Ontario Student Record |
| OSR➣Outside Sales Representative |
| OSR➣Office of School Readiness (various locales) |
| OSR➣Open Systems Resources, Inc (Amherst, NH) |
| OSR➣Oil Spill Response |
| OSR➣Operational Sex Ratio (biology) |
| OSR➣Operating Systems Review (ACM) |
| OSR➣Oversampling Ratio |
| OSR➣Ohio State Reformatory |
| OSR➣Office of Scientific Research |
| OSR➣Old San Antonio Road |
| OSR➣Overseas Service Ribbon |
| OSR➣Optical Solar Reflector |
| OSR➣Open Source Religion |
| OSR➣Onward Supply Relief (value added tax) |
| OSR➣One Seat Ride (transportation) |
| OSR➣Open Space Reservation (Indian real estate) |
| OSR➣Ontario Stroke Registry (Canada) |
| OSR➣Overall Stripping Ratio (mining) |
| OSR➣Organization Systems Renewal |
| OSR➣Optical Scanning Recognition |
| OSR➣Off Side Rear (automotive engineering) |
| OSR➣Optical Symbol Recognition (computing) |
| OSR➣Ontario Southland Railway, Inc. |
| OSR➣Organization for SETV Research |
| OSR➣Offensive Success Rate (sports) |
| OSR➣Operational Safety Requirement |
| OSR➣Optical Service Router (Cisco Systems) |
| OSR➣Operational Safety Review |
| OSR➣On-Site Representative |
| OSR➣Optimized Set Reduction |
| OSR➣Oxidative Stress Relief |
| OSR➣Ocean State Republican (Rhode Island) |
| OSR➣One-Shot Rising |
| OSR➣Office of Systems Requirements |
| OSR➣Occupational Survey Report |
| OSR➣Ostrava Mosnov Czech Republic (airport code) |
| OSR➣Organisation Syndicale Représentative |
| OSR➣Official Site Register |
| OSR➣Ockanickon Scout Reservation (Pennsylvania Boy Scout Camp) |
| OSR➣Optical Subrack |
| OSR➣Onteora Scout Reservation (Livingston Manor, NY) |
| OSR➣On-Scene Representative |
| OSR➣Over Subscription Ratio |
| OSR➣Optimized Sniper Rifle (LaRue Tactical) |
| OSR➣One Step Routing |
| OSR➣Office of Standards and Regulation |
| OSR➣Officer Selection Report |
| OSR➣Optimum Sonar Routing |
| OSR➣Outlet Sales Report |
| OSR➣Oscillator Statistics Request |
| OSR➣Order of the Silver Ribbon |
| OSR➣Office Sonégien de Radiodiffusion (French: Sonégien Broadcasting Office; Belgium) |
| OSR➣Operational Support Requirement |
| OSR➣Out of Service Repair Tag (mining maintenance industry for sending repairable items off site and keep) |
| OSR➣Original Sound Record Co. (record label) |