The Deep Six were a 1960s folk rock, sunshine pop and psychedelic band most remembered for their self-titled album released in 1966 on Liberty Records.

The group started as a folk trio in San Diego California, later expanding into full electric band fronted by Miss Dean Cannon. They did a seventeen-week stint as the house band at the Land of Oden, a folk club located in La Mesa, co-owned by their co-manager, Ken Mansfield.

They released a single for Liberty Records, a subsidiary of Capitol Records, featuring the song "Rising Sun" on which Jim Messina (Buffalo Springfield) played guitar. Despite appearing on TV shows like American Bandstand (1965) and Where the Action Is (1966), the band's subsequent album and singles failed to chart.

Original member Dave Gray departed and was replaced by Barry Kane (New Christy Minstrels, Barry McGuire). After the group split, manager Ken Mansfield became an executive at Capitol Records and would become the first U.S. manager for the Beatles' Apple label in 1968.

Bass player Dann Lottermoser joined Stone Country, a country rock band which recorded an album for RCA. Guitarist Don Dunn teamed up with Tony McCashen to record two albums for Capitol Records as Dunn & McCashen. Their song "Lydia Purple" was covered by the Paupers and others.

In 2003, their self-titled The Deep Six album was reissued on CD by Rev-Ola Records, featuring five bonus tracks.