K6 or K-6 may refer to:
Locations K6 (mountain), a mountain in Pakistan K6 pipe, a geological formation in Northern Alberta, Canada K6, shorthand for ul. Konwiktorska 6, address of the General Kazimierz Sosnkowski Municipal Stadium in Warsaw, Poland
Transportation HMS K6, a British submarine USS K-6 (SS-37), a 1914 United States Navy K-class submarine Ka 6, a glider manufactured by Alexander Schleicher GmbH & Co, Germany K6, IATA code used by Air Cambodia K 6 (keelboat), sailboat class K-6 (1926–1927 Kansas highway), now part of K-9 K-6 (1927–1958 Kansas highway), now part of US 59 K-6 (1968–1981 Kansas highway), now K-5 New Hampshire Avenue–Maryland Line, a Washington Metropolitan Area Transit Authority bus line in suburban Washington, D.C.
Other uses K-6 (education), the grades which are traditionally grouped together in American elementary schools; formerly Kindergarten through sixth grade , a 12.7 mm heavy machine gun of South Korea based on M2 Browning K-6 (missile), an Indian ballistic missile K6 Telephone Kiosk, a type of red telephone box in use the United Kingdom since 1935 k6 (software), an open-source load testing tool developed by Grafana Labs AMD K6, a computer microprocessor Sonata in C for Keyboard and Violin, sixth work by Wolfgang Amadeus Mozart according to the Köchel catalogue Grushin K-6, a Soviet Air to air missile developed in the 1950s Kimber K6S, a revolver
See also
6K (disambiguation)