PRN
- Institutional Revolutionary Party
- Journal of Pain and Symptom Management
- Mac Crenshaw Memorial Airport
- National People's Party (Indonesia)
- National Reconstruction Party
- Nicaraguan Resistance Party
- Pacific RailNews
- Packaging Recovery Note
- Paralympic route network
- Parton railway station
- Performance Racing Network
- Pern (disambiguation)
- Pertactin
- Porn (disambiguation)
- Praseodymium nitride
- Premier Retail Networks
- Premiere Radio Networks
- Pristina International Airport Adem Jashari
- Pro re nata
- Pseudorandom noise