CUK

CUK may refer to:


 * Catholic University of Korea, in Seoul & Bucheon, South Korea
 * CUK is the ICAO airline designator for Polo Aviation, United Kingdom
 * CUK is the IATA airport code for Caye Caulker Airport, Belize
 * Cuk (instrument)
 * Change UK, also known as The Independent Group for Change, a defunct UK political party