| Acronym | Definition |
|---|
| PNRA➣Programma Nazionale di Ricerche in Antartide (Italy) |
| PNRA➣Pakistan Nuclear Regulatory Authority |
| PNRA➣Parque Nacional Rio Abiseo (Spanish: Abiseo River National Park; Peru) |
| PNRA➣Princeton National Rowing Association (est. 2000; formerly Princeton International Regatta Association; Princeton Junction, NJ) |
| PNRA➣Proximal Nephrogenic Renal Antigen (glycoprotein) |