PIRF
| Acronym | Definition |
|---|---|
| PIRF | PetSafe Indoor Radio Fence (pet management) |
| PIRF | Petroleum Industry Research Foundation |
| PIRF | Peak Inspiratory Flow Rate (respiratory care) |
| PIRF | Polyphase Image-Rejection Filter |
| PIRF | Predominant Involvement of Radial-Sided Fingers (emboligenic stroke research) |