| Acronym | Definition |
|---|
| OSO➣Oxford Scholarship Online (UK) |
| OSO➣Om Shanti Om (Bollywood movie) |
| OSO➣Object Space Object |
| OSO➣Originating Signaling Office |
| OSO➣over Scan Operation |
| OSO➣Online Sales and Operations (Google team) |
| OSO➣Orbiting Solar Observatory |
| OSO➣On-Screen Orgasm |
| OSO➣Office of Satellite Operations (US Department of Commerce, NOAA) |
| OSO➣Onsala Space Observatory |
| OSO➣Oregon State Office |
| OSO➣One-Stop Operator (various locations) |
| OSO➣Occupational Safety Officer (various organizations) |
| OSO➣Office of Strategic Operations (fiction) |
| OSO➣Officer Selection Office |
| OSO➣Office of Systems Operations (Social Security Administration) |
| OSO➣Office of Systems Operations (NOAA, Silver Spring, MD) |
| OSO➣Ottawa Symphony Orchestra (Canada) |
| OSO➣Operational Support Office |
| OSO➣Office of Security Operations |
| OSO➣Office of Space Operations (NASA) |
| OSO➣OverScan Operation (VXA Technology) |
| OSO➣Offensive Systems Operator |
| OSO➣Ontario Special Olympics (Canada) |
| OSO➣Other Significant Other |
| OSO➣Ostsüdost (German: East-South-East) |
| OSO➣Office of SIGINT Operations |
| OSO➣Ovest-Sud-Ovest (Italian: West-South-West) |
| OSO➣Order Sending Organization (NASD) |
| OSO➣Osoboe Sovescanie Special Commission (Soviet Union, Communism, Stalin) |
| OSO➣Operations Staff Officer |
| OSO➣Other Supply Officer |
| OSO➣Ordnance Supply Office |
| OSO➣Organizational Security Officer |
| OSO➣Oxfordshire Schools Orchestra (UK) |
| OSO➣Objectives & Strategies Overview |
| OSO➣Ordnance Safety Observer |
| OSO➣Office of Signals Operations (US CIA) |