| Abbreviation | Definition |
|---|---|
| OASIS | Open Architecture Screen Interface System |
| OASIS | Organized, Accurate, Synergistic Information Suite |
| OAuth | Open Authentication |
| OAW | Office Activation Wizard |
| OBA | Office Business Application |
| OBB | Oriented Bounding-box |
| OBCP | Object Based Concurrent Programming |
| OBI | Obi Backwards is Ibo |
| OBIA | Object Based Image Analysis |
| OBIA | Oracle Business Intelligence Applications |
| OBIEE | Oracle Business Intelejence Enterprise Edition |
| OBOE | Off By One Error |
| OBR | OSGi Bundle Repository |
| OBRM | Online Backup and Recovery Manager |
| OBS | On Board Software |
| OBS | Open broadcast software |
| OBS | Open Broadcaster Software |
| OBS | Open Broadcasting Software |
| OBS | Open Build Service |
| OBS | OpenSuse Build Service |