HDN
HDN stands for:
- Hexamethylene tetramine dinitrate
- Liability Association of German Local Transport and Supply Companies
- Hürriyet Daily News , English-language daily newspaper in Turkey
- Yampa Valley Airport (IATA code), Hayden Airport (Colorado) , Routt County , Colorado
- Harlesden Station (Station code), railway station in the London Borough of Brent
hdn stands for:
- Northern Haida (ISO-639-3 code), variety of Haida (language) , indigenous language of North America
