Other
- Kaimkhani community zubair kk
- Kay Kay and His Weathered Underground, a Seattle indie band
- KK Slider, a character from the Animal Crossing video game series
- Atlasjet IATA airline designator
- Kabushiki kaisha, term for a Japanese corporation or public company
- Kazakh language ISO 639 alpha-2 code
- Kenyon and Knott, a pronunciation dictionary of American English
- Kernewek Kemmyn (Common Cornish), a variety of the Cornish language
- Kilokelvin (kK), temperature 1000 Kelvin
- Kinakuta top-level domain name
- KK as in OK
- k.k. or k.-k., meaning "imperial-royal", pertaining to the Austrian Empire before 1867 and to the Austrian part of the Austro-Hungarian Empire 1867–1918
- Kvinner og Klær (Norwegian: "Women and Clothes"), a Norwegian weekly magazine
- Basketball Club, in several Eastern European languages; for example:
- KK Union Olimpija, Slovenia
- KK Cibona, Croatia
- KK Partizan, Serbia
- KK Atletas Lithuania
- a term used by many Folk Nation gangs in Chicago standing for "King Killer" and referring to a person who murders a Latin Kings
- former name of a line on the New York City Subway, now called the J
- a generation of Jeep Liberty, and, overseas, a generation of Jeep Cherokee, made from 2008-2012
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