Robert Fripp (born 16 May 1946) is an English musician, songwriter, and record producer, best known as the guitarist, founder and longest lasting member of the progressive rock band King Crimson. He has also worked extensively as a session musician and collaborator, notably with David Bowie, Blondie, Brian Eno, and David Sylvian. He has also contributed sounds to the Windows Vista operating system. His discography includes contributions to over 700 official releases.

He is ranked 62nd on Rolling Stone magazine’s 2011 list of the 100 Greatest Guitarists of All Time after having been ranked by David Fricke 42nd on its 2003 list. Tied with Andrés Segovia, he also is ranked 47th on Gibson’s Top 50 guitarists of all time. His compositions often feature unusual time signatures, which have been influenced by classical and folk traditions. His innovations include Frippertronics, “soundscapes”, and new standard tuning.