PRP
- Major prion protein
- Panretinal photocoagulation
- Parallel Redundancy Protocol
- Park Royal Partnership
- Party of the People's Revolution
- Patriotic Renewal Party
- Paulista Republican Party
- Peel Regional Police
- Penicillin-resistant pneumococci
- People's Reconciliation Party
- People's Redemption Party
- People's Reform Party
- People's Republic of Poland
- People's Revolutionary Party (disambiguation)
- Performance-related pay
- Personnel Reliability Program
- Petroleum Remediation Product
- Pityriasis rubra pilaris
- Platelet-rich plasma
- Pleasure Ridge Park, Louisville
- Popular Representation Party
- Portuguese Republican Party
- Potentially responsible party
- Praja Rajyam Party
- Praseodymium monophosphide
- Press Recognition Panel
- Preston Park railway station
- Probable prime
- Professional registered parliamentarian
- Progressive Reform Party (disambiguation)
- Progressive Republican Party (disambiguation)
- Progressive rubella panencephalitis
- Proline rich protein
- Pseudorandom permutation
- Psychological refractory period
- Puerto Rican Renewal Party
- Puerto Rico Police