KTS

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
 * Brevig Mission Airport (IATA: KTS)
 * Potassium thiosulfate, a chemical compound commonly abbreviated as KTS.
 * Københavns Tekniske Skole, a school of secondary education in Copenhagen, Denmark
 * Kagoshima Television, a Japanese commercial TV station