OWSC
| Acronym | Definition |
|---|---|
| OWSC | Oman Wastewater Services Company |
| OWSC | Office of the Washington State Climatologist (Seattle, Washington) |
| OWSC | Optimum Write Speed Control (compact disc recording) |
| OWSC | Old Wesleyites Sports Club (est. 1941; Sri Lanka) |
| OWSC | Oscillating Wave Surge Converter (wave energy device) |
| OWSC | Omaha Westside Swim Club (Omaha, NE) |