| Abbreviation | Definition |
|---|---|
| OBS | Organization Breakdown Structure |
| OBSW | Ontario Basic Skills in the Workplace |
| OBU | One Big Union |
| OC | Only Caucasians |
| OC | Opportunity Cost |
| OC | Organizational Climate |
| OC | Other Company |
| OC | Outsourced Company |
| OCBC | Orange County Business Council |
| OCC | Options Clearing Corporation |
| OCD | Operations Coordination Department |
| OCG | Of the Contractor General |
| OCK | Ordering From The Cosmic Kitchen |
| OCRMS | Operational Customer Relationship Management Subsystem |
| OCRMs | Optimal Cost Routing Models |
| OCS | Occupancy Control System |
| OCT | Order Confirmation Transaction |
| OCU | Occasional Commercial Use |
| OD | Order Description |
| OD | Organizational Design |