CPN may refer to: Calpine Corporation, New York Stock Exchange symbol CPN Carnivorous Plant Newsletter Carpinteria (Amtrak station), California, Amtrak station code CPN Caspian Airlines (Iran), ICAO airline designator CPN Central Park North (disambiguation) Central Pattana, Stock Exchange of Thailand symbol CPN Centrala Produktów Naftowych, a national petrol company in Polish People's Republic Citizen Potawatomi Nation, a federally recognized tribe of Potawatomi people located in Oklahoma Clapham North tube station, London, London Underground station code CPN Confederation of the Polish Nobility Community protection notice in the United Kingdom
Medical, mathematics, science Lysine carboxypeptidase, an enzyme Certified pediatric nurse, nurse who specializes in neonates and children Chlamydia pneumoniae, generally Cpn or CpN Complex projective space, Coloured Petri net, in mathematics Community psychiatric nurse Celiac plexus neurolysis, in medicine, the chemical ablation of the celiac plexus
Political parties Communist Party of Nepal Communist Party of the Netherlands Country and Progressive National Party, early 20th-century political party in Queensland, Australia