CGN

CGN may refer to:


 * CGN, a gene that encodes for the protein cingulin
 * Ceredigion, formerly Cardiganshire, historic county in Wales, Chapman code
 * China General Nuclear Power Group, a Chinese energy company
 * Compagnie Générale de Navigation sur le lac Léman, a Swiss company operating boats on Lake Léman
 * Childhood gender nonconformity, a childhood behavioral pattern
 * CGN, IATA code for Cologne Bonn Airport, Germany
 * CGN, National Rail station code for Cogan railway station, Wales
 * CGN, U.S. Navy designation for a nuclear-powered guided missile cruiser
 * Carrier-grade NAT, an approach to IPv4 network design where end sites are configured with private network addresses
 * CGN, cis Golgi network, compartment of the Golgi apparatus
 * Crescentic glomerulonephritis, a syndrome of the kidney that is characterized by a rapid loss of kidney function