KGS or kgs can refer to: KGS (electronic toll collection), Turkey Kos Island International Airport, IATA airport code The Kansas Geological Survey The Kentucky Geological Survey The KGS Go Server Kingston Grammar School, London, UK King George School (Calgary, Alberta), Canada Kings Sutton railway station, England; National Rail station code Karachi Grammar School, Pakistan Kyrgyzstani som currency, ISO 4217 code Knots ground speed, in aviation Kilograms, the SI unit of mass