Martin Joseph Grebb (September 2, 1945 – January 1, 2020) was an American keyboardist, guitarist, and saxophonist. A member of The Buckinghams in the late 1960s, Grebb was also a record producer and an arranger, who worked with musicians including Peter Cetera, Bill Payne, Bonnie Raitt, Eric Clapton, Etta James, and Leon Russell.
