Uka or UKA may refer to: Uka (singer), Mongolian singer United Klans of America, a branch of the Ku Klux Klan Unicompartmental knee arthroplasty, a surgery to relieve arthritis of the knee UK Athletics, a sports governing body UKA (festival), a Norwegian cultural festival Uka (restaurant), a Michelin-starred Japanese restaurant in Hollywood, California UKA, the IATA airport code for Ukunda Airport Uka (village), a depopulated village in Kamchatka, Russia, or the river that flows through it Uka Airport, a decommissioned airfield in Kamchatka, Russia Ükä, a dialect of Standard Tibetan