HCN

HCN may refer to:

Science and mathematics

HCN channel, a cellular ion channel
Highly composite number, a type of integer
Hydrogen cyanide
HCN ?

Transportation

Halcyonair, a Cape Verdean airline
Headcorn railway station, in England
Hengchun Airport, in Taiwan

Other

Health Communication Network, an Australian software company
High Country News, an American newspaper

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