WCAO is an AM radio station in Baltimore, Maryland, broadcasting Gospel music on 600 kHz. It is owned by iHeartMedia, Inc. and promotes itself as "Heaven 600". The transmitter for the station is in Owings Mills, and its studios are located at The Rotunda shopping center in Baltimore.
One of the oldest radio stations in Maryland, WCAO was a CBS affiliate during the 1930s and 1940s. From the 1950s through the 1970s, WCAO was a major Top 40 station in Baltimore, flipping to a country format in 1982, competing with FM counterpart WPOC. In 1991, WCAO switched to its current urban gospel format; it is now a competitor to similarly-formatted WWIN-AM "Spirit 1400".