| Acronym | Definition |
|---|
| PSIR➣Political Science and International Relations (university department) |
| PSIR➣Phase Sensitive Inversion Recovery |
| PSIR➣Passenger Side Inflatable Restraint |
| PSIR➣Program on Studies in Religion (University of Michigan) |
| PSIR➣Pre-Sentence Investigative Report |
| PSIR➣Prix Supérieur Interrégional (French: Inter-Regional Prize) |