CFBU-FM is a radio station serving St. Catharines, Ontario, Canada.

The station broadcasts at 103.7 FM, with an effective radiated power of 250 watts, from a transmitter located atop the Arthur Schmon Tower on the Brock campus.

On January 30, 1997, Brock Radio Collective, on behalf of a company to be incorporated (Brock University Student Radio) received approval from the Canadian Radio-television and Telecommunications Commission (CRTC) to operate an English language FM campus/community radio programming undertaking at St. Catharines, on the frequency 103.7 MHz (channel 279A1), with an effective radiated power of 250 watts.

When the university required the space the station occupied on campus in 2003, CFBU relocated its studios to a privately owned student residence building at 30 Ontario Street in downtown St. Catharines.

CFBU-FM is a member of the National Campus and Community Radio Association (NCRA).