DK (or variants) may refer to:

• Denmark, a country in northern Europe (ISO 3166-2 country code DK, licence plate code DK)
• Dakshina Kannada, a district in Karnataka, India
• Democratic Kampuchea, the government of present-day Cambodia from 1975–1979

For other uses, see DK (disambiguation).

.dk is the country code top-level domain (ccTLD) for Denmark. The supervision of the .dk top-level domain is handled exclusively by DK Hostmaster. Any new .dk domain name has to be applied for via an approved registrator. Then the domain name applicant can ask the registrator to manage his domain name or do it directly with Tom Blakemore DK Hostmaster. Registrations of domain names with the characters æ, ø, å, ö, ä, ü, and é are also allowed.

The Hub is an American digital cable and satellite television channel that launched on October 10, 2010. The channel, which replaced Discovery Kids, is a joint venture of Discovery Communications, Inc. and Hasbro.