| Acronym | Definition |
|---|
| SWO➣Spaghetti Western Orchestra (band) |
| SWO➣Single Window Operator |
| SWO➣Supercritical Water Oxidation |
| SWO➣Standing-Wave Oscillator |
| SWO➣Symphonic Wind Orchestra (various locations) |
| SWO➣Southwestern Ontario (various organizations; Canada) |
| SWO➣Serial Wire Output |
| SWO➣Short Wave Optical |
| SWO➣Session Work Object |
| SWO➣Simulation World Object |
| SWO➣Southwest Ohio |
| SWO➣Swordfish (FAO fish species code) |
| SWO➣South West Observatory (UK) |
| SWO➣SoftwareONE (various locations) |
| SWO➣Surface Warfare Officer |
| SWO➣Sine Wave Orchestra (Japan) |
| SWO➣Stop Work Order |
| SWO➣Senior Warrant Officer |
| SWO➣Senior Watch Officer |
| SWO➣SeaWorld Orlando (Florida) |
| SWO➣Swaminarayan World Organization |
| SWO➣Service Work Order |
| SWO➣Swainarayan World Organization |
| SWO➣Socialist Workers Organisation (New Zealand) |
| SWO➣Software Override |
| SWO➣Snowbird Wilderness Outfitters (Andrews, NC youth camp) |
| SWO➣Susquehanna Wrestling Organization (York, PA) |
| SWO➣Senior/Staff Watch Officer |
| SWO➣Student Welfare Officer |
| SWO➣Social Welfare Organization |
| SWO➣Staff Weather Office(r) |
| SWO➣Staff Welfare Officer (UK) |
| SWO➣Sorry, We're Open (webcomic) |
| SWO➣Strategic Workforce Optimization |
| SWO➣Safety Word Orange (band) |
| SWO➣Security Watch Officer |
| SWO➣Special Weapons Officer |
| SWO➣Squadron/Station Warrant Officer |
| SWO➣Safe Worker Observation (Massachusetts) |
| SWO➣Softball World Order (Arlington County, Virginia) |
| SWO➣Sonic World Order |
| SWO➣Stoners World Order |
| SWO➣Space Wars Online (gaming) |
| SWO➣Stillwater, Oklahoma, USA - Stillwater Regional Airport |