JCK may refer to:

JCK MMA, a Chinese mixed martial arts promotion Java Compatibility Kit, a Technology Compatibility Kit for Java 6.0 Julia Creek Airport (IATA airport code), Julia Creek, Queensland, Australia

See also

CJCK-FM, call sign JCK in region C KJCK (disambiguation), call sign JCK in region K WJCK (disambiguation), call sign JCK in region W