| ORC | Oak Ridge Cemetary 
| Others |
| ORC | Oatmeal Raising Cookies
| Others |
| ORC | Obviously Really Cute
| Others |
| ORC | Occupant Restraint Controller
| Others |
| ORC | Occupational Rehabilitation Center
| Others |
| ORC | Ocean Resource Center
| Others |
| ORC | Off Road Camper
| Others |
| ORC | Off Road Capability
| Others |
| ORC | Off Road Caravan
| Others |
| ORC | Off Road Center
| Others |
| ORC | Off Road Challenge
| Others |
| ORC | Off Road Championship
| Others |
| ORC | Off Road Clinic
| Others |
| ORC | Off Road Club
| Others |
| ORC | Off Road Custom
| Others |
| ORC | Office of Regional Counsel
| Others |
| ORC | Office of Revenue Commissioners
| Others |
| ORC | Office of Rural Communities
| Others |
| ORC | Offset Row Cultivator
| Others |
| ORC | Offshore Racing Congress
| Others |
| ORC | Offshore Racing Council
| Others |
| ORC | Ogura Race Clutch
| Others |
| ORC | Ogura Racing Clutch
| Others |
| ORC | Ohio Resource Center
| Others |
| ORC | Ohio Revised Code
| Others |
| ORC | Oil Runtime Compiler
| Others |
| ORC | Old Recycled Caboose
| Others |
| ORC | Old Red Cracker
| Others |
| ORC | Old Rusty Cars
| Others |
| ORC | Oldtimer Replica Club
| Others |
| ORC | Omega Reaction Corps
| Others |
| ORC | On Road Costs
| Others |
| ORC | On Roadside Cabinet
| Others |
| ORC | One Room Challenge
| Others |
| ORC | Online Resource Centre
| Others |
| ORC | Online Roleplaying Client
| Others |
| ORC | Online Run Control
| Others |
| ORC | Ontario Racing Commission
| Others |
| ORC | Ontario Ranger Club
| Others |
| ORC | Ontario Realty Corpora
| Others |
| ORC | Oops Rewind Capability
| Others |
| ORC | Ope-Rationalization of the Concepts
| Others |
| ORC | Opel Rally Cup
| Others |
| ORC | Open Read Critique
| Others |
| ORC | Open Research Compiler
| Others |
| ORC | Opening Round Championship
| Others |
| ORC | Operational Research Consultants
| Others |
| ORC | Operations Research Center
| Others |
| ORC | Opinion Reference Comment
| Others |
| ORC | Optimized Route Cache
| Others |
| ORC | Optimized Row Columnar
| Others |
| ORC | Orange RC
| Others |
| ORC | Orange River Colony
| Others |
| ORC | Order of Railroad Conductors
| Others |
| ORC | Organic Rankine Cy
| Others |
| ORC | Organic Rankine Cyc
| Others |
| ORC | Organic Rankine Cycl
| Others |
| ORC | Organic Rankine Cycle
| Others |
| ORC | Organization Regulations and Courses
| Others |
| ORC | Organization Resources Counselors, Inc.
| Others |
| ORC | Organized Reserve Corps
| Others |
| ORC | Organized Retail Crime
| Others |
| ORC | Origin Recognition Complex
| Others |
| ORC | Original Receiving Charges
| Others |
| ORC | Oris Rally Clasico
| Others |
| ORC | Orocue, Colombia
| Others |
| ORC | Osaka Resort City
| Others |
| ORC | Oscillating Ravenous Carnivore
| Others |
| ORC | Osterreichischer Rover Club
| Others |
| ORC | Other Recordable Cases
| Others |
| ORC | Outdoor Resource Center
| Others |
| ORC | Output Routing Code
| Others |
| ORC | Outreach Clinic
| Others |
| ORC | Outreach Resource Collaborative
| Others |
| ORC | Oval Racing Champion
| Others |
| ORC | Oval Racing Council
| Others |
| ORC | Over Running Clutch
| Others |
| ORC | Over Running Coupler
| Others |
| ORC | OverRiding Commission
| Others |
| ORC | Overton Recreation Committee
| Others |
| ORC | Oxidation Reduction Catalyst
| Others |
| ORC | Oxidation Reduction Converter
| Others |
| ORC | Oxygen Release Compound
| Others |
| ORC | Oyl Riding Club
| Others |