KCO

KCO may refer to:

Music

 * KCO, the former stage name of Keiko (musician)
 * Kings Chamber Orchestra, a chamber orchestra based in the United Kingdom
 * Royal Concertgebouw Orchestra (Koninklĳk Concertgebouworkest), a symphony orchestra based in Amsterdam

Other uses

 * Agip KCO, a division of Agip operating in the Kazakhstan (northern) sector of the Caspian Sea
 * Cengiz Topel Naval Air Station (IATA code KCO), a Turkish Navy air station and civil airport in Kocaeli Province, Turkey