CFOS is an AM radio station broadcasting from downtown Owen Sound, Ontario, Canada. They play oldies and news, and are branded as 560 CFOS. 560 CFOS is owned and operated by Bayshore Broadcasting of Owen Sound.
The station originally began broadcasting in 1940 at 1370 kHz, and changed frequencies to 1400 kHz on March 29, 1941 and again to 1470 kHz in 1947. In 1958, CFOS again changed frequencies from 1470 to its current frequency at 560 kHz.
On June 21, 1978, CFOS opened a semi-satellite station CFPS-AM at Port Elgin and CFPS was given approval by the Canadian Radio-television and Telecommunications Commission (CRTC) in 2005 to convert to the FM band at 97.9 MHz.
The CRTC denied an application by the station to convert to FM in February 2008.