Christopher Hillman (born December 4, 1944) is an American musician. He was the original bassist of the Byrds. With frequent collaborator Gram Parsons, Hillman was a key figure in the development of country rock, defining the genre through his work with the Byrds, the Flying Burrito Brothers, Manassas and the country-rock group the Desert Rose Band. He was inducted into the Rock and Roll Hall of Fame in 1991 as a member of the Byrds.