CHN

CHN may stand for:


 * China's country code
 * People's Republic of China's ISO 3166-1 alpha-3 and IOC country code
 * Republic of China's IOC country code 1932–1956, now TPE
 * Canadian Health Network
 * Cheshunt railway station, Hertfordshire, National Rail station code
 * CHN analyzer, measuring carbon, hydrogen, and nitrogen
 * City Hindus Network, London, UK
 * Anglican religious orders
 * Community of the Holy Name, an Anglican religious order for women in England, Lesotho and South Africa
 * Community of the Holy Name (Australia), an Anglican religious order for women in Australia, unrelated to the English order
 * Jeonju Airport, South Korea, IATA airport code
 * Chennai, a megacity in South India.
 * Chemical formula of hydrogen cyanide and hydrogen isocyanide
 * Climate Heritage Network