| Abbreviation | Definition |
|---|---|
| OM | Output Mode |
| OMA | Open Meta Archive |
| OMF | Object Module Format |
| OMF | Open Media Framework |
| OMF | OpenSource Metadata Framework |
| OMF | Operational Mission Force |
| OMG | Object Management Group |
| OMI | Owner Method Invocation |
| OML | Object Manipulation Language |
| OMM | Operations Maintenance and Monitoring |
| OMNI | One Model, Numerous Identities |
| OMP | Open Management Protocol |
| OMP | OpenMP Directives |
| OMR | Optical Mark Reader |
| OMR | Optical Mark Reading |
| OMR | Optical Mark Recognition |
| OMS | Object Messaging Service |
| OMS | Open Midi System |
| OMT | Object Model Template |
| OMT | Object Modeling Technique |