LK

LK or lk may refer to:

Arts and entertainment

• The LK, a Swedish indie band
• Lanky Kong, a member of the Kong family in the Donkey Kong video game series first introduced in Donkey Kong 64
• Little Killers, a former band project of Trash Money guitarist Molly Dolittle Slade

Businesses and organizations

• Air Luxor (IATA airline code LK)
• Latin Kings (gang), an urban street gang
• Lyceum Kennedy, a private school in Manhattan

Geography

• Lake, on maps

Places

• Sri Lanka (ISO 3166-1 alpha-2 country code LK)

• .lk, Internet country code top-level domain (ccTLD) for Sri Lanka

• Letterkenny, a town in County Donegal, Ultster, Ireland
• LK (index mark code), used for the Irish county Limerick on vehicle registration plates from 1984 to 2013

Science

• System LK, in mathematics, the classical sequent calculus
• Late Cretaceous, from the German word Kreidezeit for Cretaceous
• Linking number, in mathematics, a numerical invariant that describes the linking of two closed curves in three-dimensional space

Technology

• LK (spacecraft), a Soviet lunar lander

Other uses

• Lech Kaczyński, president of Poland between 2005 and 2010
• Lord Keeper of the Great Seal, an historical English Officer of State