CBAF-FM (88.5 MHz) is a French-language public Canadian radio station located in Moncton, New Brunswick.

In 1980, the station was granted a rebroadcaster on FM at 88.5 MHz, to offset AM radio reception problems in the Moncton area.

In 1970, CBAF, with its Radio-Canada television station CBAFT, and English-language counterpart CBA, relocated to their new studios and offices on Archibald Street (today known as University Avenue) beside the Hôtel-Dieu de l'Assomption Hospital, which was renamed the Dr. Georges-L. Dumont Regional Hospital by the Government of New Brunswick in 1967.

The duplicate channel was needed in order to offset severe night-time coverage deficiencies of the AM signal and to improve the reception of the station in outlying areas.

On July 25, 2013, the CBC filed and application to the CRTC to convert CBAF-21 Saint-Quentin from 1230 kHz to 91.1 MHz;[2] this was approved January 10, 2014.