| Abbreviation | Definition |
|---|---|
| OOP | Object Oriented Procedure |
| OOP | Object-Oriented Programming |
| OOPL | Object Oriented Programming Language |
| OOPS | Object Oriented Programming System |
| OOPSLA | Object Oriented Programming Systems Languages And Applications |
| OOS | Object-Oriented System |
| OOS | Ostrich Operating System |
| OOSM | Object- Oriented Systems Modeling |
| OOT | Object Oriented Technology |
| OOTA | Operator Outreach Technical Assistance |
| OOTAP | Operator Outreach Technical Assistance Program |
| OOV | Object Oriented Verification |
| OP | Operator Panel |
| OP | Outline Processor |
| OPC | Optical Processing Calibration |
| OPI | Open Prepress Interface |
| OPL | Open Publication License |
| OPL | Optimization Programming Language |
| OPL | Organiser Programming Language |
| OPLG | On Premise Load Generators |