John Michael "Poli" Palmer (born 26 May 1943 in Worcester) is an English rock musician who was a key member in the progressive rock band Family. Though he was not an original member, he was regarded as being integral to the group's sound. He played the vibraphone, flute, piano, synthesizers and occasional drums, and he was with the band from late 1969 until late 1972. He wrote the music for the rock opera Hero, produced in 1976 by the Australian Opera in Sydney. In recent years, Palmer has split time between gigging and music computer work.