CGN may refer to:
Science and medicine Childhood gender nonconformity Cingulin, encoded by the CGN gene Cis Golgi network Crescentic glomerulonephritis
Transport Cogan railway station, Wales Cologne Bonn Airport, Germany Compagnie Générale de Navigation sur le lac Léman, a Swiss transport company
Other uses Carrier-grade NAT, a networking technology Ceredigion, a historic county in Wales China General Nuclear Power Group, a Chinese energy company Guided missile cruiser