PRN
PRN may refer to:

Computing 
 PRN:, a printer device name in DOS
 Pseudorandom noise, in cryptography

Medicine 
 Pertactin (PRN), a virulent factor of the bacterium Bordetella pertussis
 Pro re nata (P.R.N. ), prescription jargon
 PRN Forum, a precursor to the Journal of Pain and Symptom Management

Politics 
 National Reconstruction Party, Brazil
 Nicaraguan Resistance Party, Nicaragua
 , Mexico, an Institutional Revolutionary Party precursor

Radio 
 Performance Racing Network, an American NASCAR radio network
 Premiere Radio Networks, another American network

Transport 
 Pacific RailNews, a defunct American hobbyist magazine
 Paralympic route network, linking Paralympic games venues
 Parton railway station, Cumbria, England
 Pristina International Airport Adem Jashari, Kosovo (IATA:PRN)
 Mac Crenshaw Memorial Airport, Greenville, Alabama, US (FAA LID:PRN)

Other uses 
 Packaging Recovery Note, per UK Producer Recovery Obligations
 Praseodymium nitride, a chemical (formula: PrN)
 Premier Retail Networks, a provider of in-store ad screens

See also
 PR:NS (disambiguation)
 Pern (disambiguation)
 Porn (disambiguation)