WWCK-FM (105.5 MHz, "CK105.5") is a radio station in Flint, Michigan, broadcasting a top 40 (CHR) format.

WMRP-FM aired a beautiful music format while WMRP 1570 played MOR; the conservative owners of the stations prohibited any advertising for tobacco or alcohol products.

In 1971, the United Methodist Church withdrew support for WMRP-AM-FM, and the stations were sold that year to John W. Nogaj, who changed the FM's call letters to WWCK in November 1971 as a tribute to Windsor, Ontario's powerhouse CKLW and installed a daytime Top 40 and nighttime AOR format.

WWCK-FM was a market leader in Flint for many years, and it was named as the top rated rock station in all of the United States in 1985, WWCK-FM was also the home of WWCK's DJ turned-filmmaker Michael Moore's Sunday night show "Radio Free Flint" from 1980 through 1985 and "Buffalo Dick's Radio Ranch" with Jeffrey Lamb and future voice actor himself Robert Paulsen was voted as "The Best Local Programming In All Markets" by Billboard Magazine in 1982.

This marked the first time Flint had a 2nd FM CHR/Top 40 Hit music radio station of its own since the days of WTAC 600 AM changed from Top 40 to Country in 1981.