CUK may refer to:
Catholic University of Korea, in Seoul and Bucheon, South Korea Caye Caulker Airport, Belize (IATA airport code: CUK) Cakung railway station, a railway station in Jakarta, Indonesia Cuk (instrument) Change UK, also known as The Independent Group for Change, a defunct UK political party
See also
Ćuk converter, in electronics Çük, an Idel-Ural festival Miloš Ćuk (born 1990), Serbian water polo player Slobodan Ćuk, inventor, electrical engineer after whom the Ćuk converter is named Vladimir Cuk (born 1975), Croatian actor and former basketball player