KTS/Kts may refer to: Keirsey Temperament Sorter, a self-assessed personality questionnaire Key telephone system Klippel–Trénaunay syndrome in medicine Knight of the Military Order of the Tower and Sword of Portugal The Knights Templar School, a secondary school in Baldock, Hertfordshire, England Knot (unit), a unit of speed equal to one nautical mile per hour Kotlin (programming language), uses the .kts file extension for Kotlin script files Brevig Mission Airport (IATA: KTS) Københavns Tekniske Skole, a school of secondary education in Copenhagen, Denmark Kagoshima Television Station, a television station in Kagoshima Prefecture, Japan