KG, Kg, kG or kg may refer to:

  • Kammergericht, the Oberlandesgericht (Provincial Appeal Court) in Berlin, Germany
  • Kommanditgesellschaft, a German version of a limited partnership
  • King George County, Virginia
  • Kongo language (ISO 639 alpha-2)
  • Kragujevac, in Serbia
  • Kwansei Gakuin University, in Japan
  • Kyrgyzstan (ISO 3166-1 alpha-2 country code)
  • Kampfgeschwader, a unit of command in the former German Luftwaffe
  • Kampfgruppe, "KG", a flexible combat formation used by Axis forces during World War II
  • Kriegsgefangener, German term for prisoner of war. During WWII, the clothes of POWs in Germany were painted with the initials KG.
  • Knight of the Garter, "KG", a member of an English order of chivalry
  • König, the German language word for King
  • King, Kg. when following the name of a Christian saint
  • Ken "KG" Cunningham, Australian radio presenter and cricketer
  • Kyle "KG" Gass, American musician and one-half of Tenacious D
  • Kevin Garnett, American basketball player currently with the NBA's Boston Celtics
  • Kindergarten, the grade preceded by pre-school and followed by first grade
  • KG (wrestler), Japanese professional wrestler
  • kilogauss, "kG", unit of magnetic field
  • kilogram, "kg", the SI base unit of mass
  • Klein-Gordon equation, particles in quantum mechanics
  • Kasparov's Gambit, an Electronic Arts chess videogame.
  • Volkswagen Karmann Ghia, designed by the Italian firm Ghia, and built by German coach builder Karmann
  • Ship's center of gravity above keel
  • LAI - Línea Aérea IAACA, via its IATA airline designator