LK

LK may refer to:

As a code

• Sri Lanka, ISO 3166-1 alpha-2 country code LK
• .lk, Internet country code top-level domain (ccTLD) for Sri Lanka
• Air Luxor, IATA airline code LK
• Limerick, LK is the code for the Irish County.

As an abbreviation

• Little Killers, a former band project of Trash Money guitarist Molly Dolittle Slade
• Lech Kaczyński, president of Poland between 2005–2010
• Latin Kings (gang), an urban street gang
• Low kick, a kick which is low
• Lanky Kong, a member of the Kong family in the Donkey Kong video game series first introduced in Donkey Kong 64
• Letterkenny, a town in County Donegal, Ultster, Ireland
• Late Cretaceous, coming from the German word for Cretaceous, which starts with K.

Other

• LK Lander, a Soviet lunar lander
• The LK, a Swedish indie band
• LK system, the classical sequent calculus