| Acronym | Definition |
|---|
| RPIA➣Radial Partition Immunoassay |
| RPIA➣Regional Program of Innovative Actions (EU) |
| RPIA➣Rocket Propellant Information Agency |
| RPIA➣Reform Party of Iowa |
| RPIA➣Rensselaer Polytechnic Institute Ambulance (Troy, NY) |
| RPIA➣Restorative Proctocolectomy with Ileoanal Anastomosis (colorectal medicine) |