PN
- pN – (s) piconewton
- PN
- (s) petanewton
- Pitcairn Islands (ISO 3166 diagram)
- PNAC – (i) Project for the New American Century
- PNC
- (i) Palestinian National Council
- Palmerston North City (cf. PNC, a New Zealand rapper from this city)
- Pittsburgh National Corporation, one of the two companies that merged into today's PNC Financial Services
- Provident National Corporation, the other company that merged into PNC Financial Services
- PNF – (i) Pilot Not Flying (aviation)
- PNG
- (s) Papua New Guinea (ISO 3166 trigram)
- (i) Portable Network Graphics
- PNP
- (i) Partido Nuevo Progresista
- Plug 'N' Play/Pray
- Positive Negative Positive
- PNS – (s) Pensacola, Florida (IATA airport code)
- PNVS – (i) Pilot Night Vision Sensor
- PNH
- (i) Paroxysmal nocturnal hemoglobinuria
- Police Nationale d'Haïti (French, "National Police of Haiti")
Read more about this topic: List Of Acronyms And Initialisms: P