K3 may refer to:
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TransportationEdit
- 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
MilitaryEdit
WeaponsEdit
- K-3 (rifle), an Armenian-made bullpup rifle
- Daewoo K3, a light machine gun
ShipsEdit
- Soviet submarine K-3 Leninsky Komsomol, the first Soviet nuclear submarine
- Template:USS, a 1914 United States Navy K-class submarine
- Template:HMS, a 1916 British K-class submarine
- Template:HMS, a 1940 Royal Navy Flower-class corvette
OtherEdit
- Pohang Airport, by United States Air Force designator during the Korean War
- Life Regiment Hussars, Swedish cavalry regiment
- K3, a bombproof WWII submarine pen at the German Lorient Submarine Base in France
Science, technology, computing and mathematicsEdit
- 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 entertainmentEdit
- 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 usesEdit
- 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