DKK may refer to:
* Danish krone, by ISO 4217 currency code
* ''Deutsches Klima-Konsortium'', see German Climate Consortium
* Dickkopf, a gene and protein family with roles in embryonic development in animals
* ''Dil Kya Kare'', a 1999 Hindi film
* Dakka language of Sulawesi, Indonesia (ISO code: dkk)
* Chautauqua County/Dunkirk Airport, New York State (IATA code: DKK)
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