| Acronym | Definition |
|---|
| OCG | Osage County Guns (Belle, MO) |
| OCG | Office of the Contractor General (Jamaica) |
| OCG | Organized Crime Group |
| OCG | Open Cluster Group |
| OCG | Online Computer Game |
| OCG | Office of Contracts and Grants (various schools) |
| OCG | Oxford Computer Group (various locations) |
| OCG | Office of the Comptroller General (Canada) |
| OCG | Oesterreichische Computer Gesellschaft (Vienna, Austria) |
| OCG | Office of Cancer Genomics (National Cancer Institute) |
| OCG | Optical Communications Group (Glendale, NY) |
| OCG | Offline Content Generator (MediaWiki) |
| OCG | Oral Cholecystography |
| OCG | Online Consulting Group, Inc. (Detroit, MI) |
| OCG | Operational Coordination Group |
| OCG | OC Group (internet business management corporation) |
| OCG | Operations Control Group |
| OCG | Overall Coordination Group |
| OCG | Online Charging Gateway |
| OCG | Operation Concept Graphic |
| OCG | Ocean Catalog Group |
| OCG | Optimal Code Generation |