Peter A. Giles (born 17 June, 1944, in Winton, Bournemouth, Dorset, England) is a bass player and vocalist who, with his brother Michael Giles and Robert Fripp, formed Giles, Giles and Fripp. Peter was replaced by Greg Lake when Fripp and Mike Giles formed King Crimson. Peter later guest appeared on Crimson's second album In the Wake of Poseidon, and in 2002 he joined with other Crimson alumni in 21st Century Schizoid Band.