OPR
OPR may denote a system operator, a class of opioid pain medication, performance evaluations for officers, a government office overseeing professional conduct, or rankings in competitive poker.
Medical
Community
Governmental
Office of Professional Responsibility
Organization of Primary Responsibility
Oxygen Pressure Regulator
Orbiter/Payload Recorder
Operations Planning Review
Officer Performance Report
Operator
Official Public Record
Office of Primary Responsibility
Regional
Oregon Pacific Railroad Company
Operating Performance Regime
Ontario Pacific Railway
Ottawa & Prescott Railway