| Acronym | Definition |
|---|
| PGSU➣Post Graduate Students' Union (India) |
| PGSU➣Primorsko Goranska Stranka Umirovljenika (Croatian: Primorje-Gorski Pensioners Party; Primorje-Gorski, Croatia) |
| PGSU➣Private Guardian Support Unit (Australia) |
| PGSU➣Procurement and General Services Unit (UN) |