K3 may refer to:

Transportation

China Railway K3/4 The China Railway K3/4 train is a weekly international K-series train from Beijing to Moscow via Ulaanbaatar mainly using the Trans-Siberian and Trans-Mongolian railways. The train started running in 1959, covering a distance of 7826km, and i ...

* K-3 (Kansas highway), a state highway in Kansas * London Bus route K3 *

Taquan Air Taquan Air is the operating name for Venture Travel, LLC, an American regional airline headquartered in Ketchikan, a city in the southeastern portion of the U.S. state of Alaska. It operates domestic scheduled passenger and charter services. It ...

, an Alaskan commuter airline (by IATA code) *

K-3 cart The K-3 cart is a 2-wheel, strongly constructed wire cart, similar to artillery caissons, but equipped for carrying and reeling out wire; used together with Signal cart, type K-4, to form the wagon formerly called "Pintle wire wagon, model 1910." ...

Kia Forte The Kia Forte, known as the K3 in South Korea, the Forte K3 or Shuma in China and Cerato in South America, Australia, New Zealand and Russia, is a compact car manufactured by South Korean automaker Kia since mid-2008, replacing the Kia Spectra. I ...

, sold as Kia K3 in South Korea *

LNER Class K3 The Great Northern Railway Class H4 (classified K3 by the LNER) was a class of 2-6-0 steam locomotive designed for mixed-traffic work. The type was a more powerful development of the earlier H3 ( LNER K2) class and was notable at the time, ...

, a steam locomotive * GSWRI Class K3, a

Great Southern and Western Railway The Great Southern and Western Railway (GS&WR) was an Irish gauge () railway company in Ireland from 1844 until 1924. The GS&WR grew by building lines and making a series of takeovers, until in the late 19th and early 20th centuries it was the ...

(Ireland) steam locomotive

Military

;Units *

Life Regiment Hussars The Life Regiment Hussars ( sv, Livregementets husarer; designated K 3) is one of the world's oldest regiments still active. The regiment descends directly from units set up by King Gustav I of Sweden (Gustav Vasa) in 1536, when Sweden set ...

, Swedish cavalry regiment ;Weapons * K-3 (rifle), an Armenian-made bullpup rifle *

Daewoo K3 The Daewoo Precision Industries K3 is a South Korean light machine-gun. It is the third indigenous firearm developed in South Korea by the Agency for Defense Development, following the Daewoo Precision Industries K1 submachine gun and Daewoo Prec ...

, a light machine gun ;Ships * Soviet submarine K-3 ''Leninsky Komsomol'', the first Soviet nuclear submarine * , a 1914 United States Navy K-class submarine * , a 1916 British K-class submarine * , a 1940 Royal Navy ''Flower''-class corvette ;Airfields *

Pohang Airport Pohang Gyeongju Airport is an airport in Pohang, South Korea . In 2011, 255,227 passengers used the airport. History Pohang Airfield was originally developed during the Japanese Imperial period. Korean war In early July 1950 Pohang airfield w ...

, by United States Air Force designator during the Korean War

Science, technology, computing and mathematics

* The Kleene logic K₃ * A version of the

K (programming language) K is a proprietary array processing programming language developed by Arthur Whitney and commercialized by Kx Systems. The language serves as the foundation for kdb+, an in-memory, column-based database, and other related financial products. T ...

K3 surface In mathematics, a complex analytic K3 surface is a compact connected complex manifold of dimension 2 with trivial canonical bundle and irregularity zero. An (algebraic) K3 surface over any field means a smooth proper geometrically connected alg ...

, a compact complex surface in mathematics *

Menadione Menadione is a natural organic compound with the formula C6H4(CO)2C2H(CH3). It is an analog of 1,4-naphthoquinone with a methyl group in the 2-position. It is sometimes called vitamin K3. Use is allowed as a nutritional supplement in animal feed ...

, vitamin K₃ * K3, 1774 marine chronometer made by

Larcum Kendall Larcum Kendall (21 September 1719 in Charlbury, Oxfordshire – 22 November 1790 in London) was a British watchmaker. Early life Kendall was born on 21 September 1719 in Charlbury. His father was a mercer and linen draper named Moses Ke ...

Pentax K-3 The Pentax K-3 is a 24-megapixel Pentax high-end digital single-lens reflex camera with an APS-C sensor, announced on 7 October 2013. The Pentax K-3 is the successor to both the K-5 II and K-5 IIs models, which have a 16-megapixel sensor. The K- ...

, a digital SLR camera

Media and entertainment

K3 (band) K3 is a Belgium, Belgian-Netherlands, Dutch girl group with a Dutch language, Dutch-language pop repertoire, consisting of Hanne Verbruggen, Marthe De Pillecyn and Julia Boschman. The group's name is derived from first letters of the three fir ...

, a Belgian/Dutch girl group *

K3 (television) K3 () was a public television channel operated by Televisió de Catalunya available in analogue and DTT in Catalonia, Balearic Islands, Valencia, Andorra, Northern Catalonia and partly in Aragón. K3 was born in 2001 from the re-estructurat ...

, 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

K3 League The K3 League is the third tier of South Korean football league system, which was created from the rebranding of the Korea National League (2003–2019) and the former K3 League (2007–2019) into K3 League and K4 League in 2020. 16 teams are ...

, a South Korean football league *

Gasherbrum IV Gasherbrum IV ( ur, گاشر برم -4; ), surveyed as K3, is the 17th highest mountain on Earth and the 6th highest in Pakistan. It is one of the peaks in the Gasherbrum massif. The Gasherbrums are a remote group of peaks located at the north ...

, a mountain in the

Karakoram The Karakoram is a mountain range in Kashmir region spanning the borders of Pakistan, China, and India, with the northwest extremity of the range extending to Afghanistan and Tajikistan. Most of the Karakoram mountain range falls under the ...

previously surveyed as K3. Sometimes erroneously recorded as

Broad Peak Broad Peak ( ur, ) is a mountain in the Karakoram on the border of Pakistan and China, the twelfth-highest mountain in the world at above sea level. It was first ascended in June 1957 by Fritz Wintersteller, Marcus Schmuck, Kurt Diemberger, an ...

. *

Kankakee, Illinois Kankakee is a city in and the county seat of Kankakee County, Illinois, United States. As of 2020, the city's population was 24,052. Kankakee is a principal city of the Kankakee-Bourbonnais-Bradley Metropolitan Statistical Area. It serves as an ...

, an expression or abbreviation used to identify Kankakee, IL {{Letter-Number Combination Disambiguation