| Acronym | Definition |
|---|
| OSW➣Over Seas Worker (Philippines) |
| OSW➣Office of the Status of Women (various locations) |
| OSW➣Offshore Wind (renewable energy source) |
| OSW➣Old School Wrestling |
| OSW➣Office of Solid Waste |
| OSW➣Orsk (Russia) |
| OSW➣Operation Southern Watch (JTF-SWA) |
| OSW➣Office of Surface Water (USGS) |
| OSW➣On-Site Wastewater (various locations) |
| OSW➣Off the Streets and Into Work |
| OSW➣Official Scrabble Words |
| OSW➣Oregon Stage Works (theater) |
| OSW➣Old Swedish (linguistics) |
| OSW➣Osijek Wireless (Croatia) |
| OSW➣One Season Wonder |
| OSW➣Office of Secretary of War (US DoD) |
| OSW➣Operations Support Wing |
| OSW➣Orient Script Worldwide (UK) |
| OSW➣Outbound Signaling Word |
| OSW➣Otaku Sailor Wars (game) |
| OSW➣Open Surface Wound |
| OSW➣Over-Size Waveguide |