HCN may refer to:
<templatestyles src="Template:TOC_right/styles.css" />{{#if:|<templatestyles src="Template:TOC limit/styles.css" />}}
Science and mathematicsEdit
- HCN channel, a cellular ion channel
- Highly composite number, a type of integer
- Hydrogen cyanide, chemical with the formula Template:Chem
TransportationEdit
- Halcyonair, a Cape Verdean airline
- Headcorn railway station, in England
- Hengchun Airport, in Taiwan
OtherEdit
- Health Communication Network, an Australian software company
- High Country News, an American newspaper