| Acronym | Definition |
|---|
| PWSA➣Prader-Willi Syndrome Association |
| PWSA➣Pittsburgh Water and Sewer Authority (Pittsburgh, PA) |
| PWSA➣Ports and Waterways Safety Act |
| PWSA➣Provincial Women's Softball Association (Ontario, Canada) |
| PWSA➣Port and Waterways Safety Act of 1972 |
| PWSA➣Printed Wide-Slot Antenna |