CPN may refer to: Calpine Corporation, New York Stock Exchange symbol CPN Canadian Perinatal Network Carnivorous Plant Newsletter Carpinteria (Amtrak station), California, Amtrak station code CPN Caspian Airlines (Iran), ICAO airline designator CPN Celiac plexus neurolysis, in medicine, the chemical ablation of the celiac plexus Central Park North (disambiguation) Central Pattana, Stock Exchange of Thailand symbol CPN Chlamydia pneumoniae, generally Cpn or CpN Citizen Potawatomi Nation, a federally recognized tribe of Potawatomi people located in Oklahoma Clapham North tube station, London, London Underground station code CPN Coloured Petri net Communist Party of Nepal Communist Party of the Netherlands Community psychiatric nurse Complex projective space, Confederation of the Polish Nobility Country and Progressive National Party, early 20th-century political party in Queensland, Australia Lysine carboxypeptidase, an enzyme Community Protection Notice in the United Kingdom