Peter Lawrence Buck (born December 6, 1956 in Berkeley, California) is the guitarist and co-founder, along with Bill Berry, Mike Mills, and Michael Stipe, of the alternative rock band R.E.M.
Throughout his career with R.E.M., which was founded in 1980, Buck has also been an official member of various 'side project' groups. These groups include Hindu Love Gods, The Minus 5, Tuatara, The Baseball Project and Robyn Hitchcock and the Venus 3, each of which have released at least one full-length album. Additionally, another side project group called Full Time Men released an EP while Buck was a member; a current side project group called Slow Music plays semi-regular gigs.
Buck also has a notable career as a record producer (including releases by Uncle Tupelo, Dreams So Real, The Fleshtones, Charlie Pickett, and The Feelies), as well as a session musician (for the likes of The Replacements, Billy Bragg, and Eels.)