| Acronym | Definition |
|---|
| ORV➣Off Road Vehicle |
| ORV➣Oroville (Amtrak station code; Oroville, CA) |
| ORV➣Oral Rabies Vaccination |
| ORV➣Open Rack Vaporizer (natural gas industry) |
| ORV➣Operational Readiness Verification (nuclear plant assessment) |
| ORV➣Oil Recovery Vessel |
| ORV➣Objective Rendezvous (Canadian Forces) |
| ORV➣Optical Retardation Velocity |