DNK
DNK is an acronym. It can be used to refer to:
- Denmark, a country in Europe (ISO 3166-1 country code)
- Dnipropetrovsk International Airport, an airport in Dnipro, Ukraine (IATA airport code)
- Deutsches Nationalkomitee Biologie, a German scientific non-profit and non-governmental organisation, representing German biologists on an international level.