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
