Dennis Gerrard Stephen Doherty was a Canadian singer and musician. A tenor, he was a founding member of the 1960s musical group the Mamas & the Papas for which he was inducted into the Rock and Roll Hall of Fame in 1998.

The Mamas & the Papas was a folk-rock vocal-group which recorded and performed from 1965 to 1968. The group was a defining force in the music scene of the counterculture of the 1960s. Formed in New York City, the group consisted of Americans John Phillips, Cass Elliot, and Michelle Phillips, and Canadian Denny Doherty. Their sound was based on vocal harmonies arranged by John Phillips, the songwriter, musician, and leader of the group, who adapted folk to the new beat style of the early 1960s.