KGS

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