GK or Gk may mean or refer to:

  • Gk., an abbreviation for Greek, especially Greek language
  • General knowledge
  • GK Reid, an American fashion stylist and TV star of Bravo's Double Exposure
  • Gabriel Knight, a series of adventure games
  • Gallien-Krueger, an instrument amplifier company
  • Gameknot, an online chess-playing website
  • Garrison Keillor, an American radio show host
  • Gawad Kalinga, an anti-poverty movement based in the Philippines
  • Genghis Khan emperor of Asia
  • Gigakelvin, an SI unit of temperature
  • Gōdō gaisha, a type of Japanese business organization known as GK
  • Goalkeeper, in sports short-hand
  • Godskitchen, an international superclub and trance music brand
  • Greater Kailash, New Delhi, India
  • Guernsey, FIPS PUB 10-4 territory code
  • Geilenkirchen, a German city
  • Graham-Kapowsin High School in Pierce County, Washington
  • GateKeeper (roller coaster), a Wing Coaster at Cedar Point amusement park

Read more about GK:  Media