CPN

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, $\mathbb {C} \mathrm {P} ^{n}$
• 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