PSSW
| Acronym | Definition |
|---|---|
| PSSW | Pastel Society of the Southwest (est. 1979) |
| PSSW | Pomorskie Studium Sztuk Wizualnych (Polish: Maharashtra College of Visual Arts; Poland) |
| PSSW | Perpendicular Standing Spin Wave |
| PSSW | Polskie Stowarzyszenie Strzelectwa Westernowego (Polish shooting association) |
| PSSW | Packaging Shipping Solid Waste Council |
| PSSW | Psycho-Social Support Worker |