K3 may refer to:
Transportation
edit- China Railway K3/4
- K-3 (Kansas highway), a state highway in Kansas
- London Bus route K3
- Taquan Air, an Alaskan commuter airline (by IATA code)
- K-3 cart
- Kia Forte, a compact car sold as Kia K3 in South Korea
- Kia K3 (BL7), a subcompact car
- LNER Class K3, a class of British steam locomotives
- GSWRI Class K3, a Great Southern and Western Railway (Ireland) steam locomotive
Military
edit- Units
- Life Regiment Hussars, Swedish cavalry regiment
- Weapons
- K-3 (rifle), an Armenian-made bullpup rifle
- Daewoo K3, a light machine gun
- Ships
- Soviet submarine K-3 Leninsky Komsomol, the first Soviet nuclear submarine
- USS K-3 (SS-34), a 1914 United States Navy K-class submarine
- HMS K3, a 1916 British K-class submarine
- HMS Heliotrope (K03), a 1940 Royal Navy Flower-class corvette
- Airfields
- Pohang Airport, by United States Air Force designator during the Korean War
Science, technology, computing and mathematics
edit- The Kleene logic K3
- A version of the K (programming language)
- K3 surface, a compact complex surface in mathematics
- Menadione, vitamin K3
- K3, 1774 marine chronometer made by Larcum Kendall
- Pentax K-3, a digital SLR camera
Media and entertainment
edit- K3 (band), a Belgian/Dutch girl group
- K3 (television), a Catalan television channel
- K3: Prison of Hell, a 2009 pornographic horror film
- K3, a world in Donkey Kong Country 3: Dixie Kong's Double Trouble!
Other uses
edit- K3 League, a South Korean football league
- Gasherbrum IV, a mountain in the Karakoram previously surveyed as K3. Sometimes erroneously recorded as Broad Peak.
- Kankakee, Illinois, an expression or abbreviation used to identify Kankakee, IL