| Acronym | Definition |
|---|
| PWAS➣Public Welfare Assistance Scheme (various organizations) |
| PWAS➣Prince William Art Society (est. 1971; Virginia) |
| PWAS➣Piezoelectric-Wafer Active Sensor |
| PWAS➣Pemco World Air Services |
| PWAS➣Personal Whole-Air Sampler (atmospheric research) |
| PWAS➣Peter Waldmann Amyloidose Stiftung (German: Peter Waldmann Amyloidosis Foundation; Switzerland) |