CK, Ck, or ck may refer to:
The CKY video series is a series of videos produced by Bam Margera and Brandon DiCamillo and other residents of West Chester, Pennsylvania.
CKVR-DT, virtual channel 3 (VHF digital channel 10), is the flagship station of the CTV 2 television system licensed to Barrie, Ontario, Canada.
CKMI-DT, UHF channel 15, is a Global owned-and-operated television station located in Montreal, Quebec, Canada.
The CKUA Radio Network is a Canadian donor-funded community radio network based in Edmonton, Alberta. Originally located on the campus of the University of Alberta in Edmonton (hence the UA of the call letters), it was the first public broadcaster in Canada.
CKVU-DT, virtual channel 10 (UHF digital channel 33), is a Citytv owned-and-operated television station licensed to Vancouver, British Columbia, Canada.
CKGM (branded as TSN 690 Montreal) is an English language AM radio station in Montreal, Quebec, owned by Bell Media Radio.
CKE Restaurants Holdings, Inc., is the parent company of the Carl's Jr., Hardee's, Green Burrito, and Red Burrito fast food restaurant brands.