PIGR
| Acronym | Definition |
|---|---|
| PIGR | Polymeric Immunoglobulin Receptor (gene) |
| PIGR | Pine Grossbeak (bird species common name) |
| PIGR | Polska Izba Gospodarcza Rusztowan (Polish: Polish Chamber of Commerce Scaffolding) |
| PIGR | Penetrating Injuries in the Gluteal Region |