| Acronym | Definition |
|---|
| PSTR➣Pension Scheme Tax Reference (UK) |
| PSTR➣Port Stanley Terminal Rail (tourist railway; Canada) |
| PSTR➣Pilgrim Sands Trail Riders (motorcycle club; Massachusetts) |
| PSTR➣Pre-Storage Review |
| PSTR➣Post System Test Review |
| PSTR➣proportion of days in therapeutic range |
| PSTR➣Pumpless Steel Tank Rectifier |