Kindergarten, education for young children

Kyrgyzstan (ISO 3166-1 alpha-2 country code)

Kilogram, "kg.", the SI base unit of mass

Kevin Garnett, American Basketball Player currently on NBA's Boston Celtics

Knight of the Garter, an English order of chivalry

King, Kg. when following the name of a Christian saint

Kongo language (ISO 639 alpha-2)

Kwansei Gakuin University, in Japan

Volkswagen Karmann Ghia, designed by the Italian firm Ghia, and built by German coach builder Karmann

King George County, Virginia

Klein-Gordon equation, particles in quantum mechanics

Kampfgeschwader, a unit of command in the former German Luftwaffe

König, the German language word for King

Kommanditgesellschaft, German version of a limited partnership

LAI - Linea Aerea IAACA, via its IATA airline designator

Ken "KG" Cunningham, Australian radio presenter and cricketer

Kyle "KG" Gass, American musician and one-half of Tenacious D