Robert Fripp (born 16 May 1946 in Wimborne Minster, Dorset, England) is a guitarist, composer and a record producer, perhaps best known for being the guitarist for, and only constant member of, the progressive rock band King Crimson. His work, spanning five decades, encompasses a variety of musical styles. He is married to Toyah Willcox. Fripp was ranked 42nd on Rolling Stone magazine’s list of the "100 Greatest Guitarists of All Time".

Fripp’s earliest professional work began in 1967, when he responded to an ad looking for a singing organist for a band being formed by bassist Peter Giles and drummer Michael Giles, despite being neither a singer nor an organist. Though unsuccessful as a live act, Giles, Giles and Fripp did manage to release two singles, as well as an album, The Cheerful Insanity of Giles, Giles and Fripp.

Fripp began playing guitar at the age of eleven. He says he was tone deaf with no sense of rhythm when he started. His comment on dealing with the obstacle is "Music so wishes to be heard that it sometimes calls on unlikely characters to give it voice."

While being taught guitar basics by his teacher Don Strike, he began to develop the technique of crosspicking, which would later become a significant technique taught in Guitar Craft.

In 1984, Fripp began using the New Standard Tuning, which would also become the official tuning of Guitar Craft.

Fripp is left-handed, but plays a right-handed guitar.

Robert Fripp worked at Microsoft’s studios to record new sounds and atmospheres for Windows Vista.

During 2004, Fripp toured with Joe Satriani and Steve Vai as the guitar trio G3.

In late 2005 and early 2006, Fripp joined Bill Rieflin’s improvisational Slow Music project, along with guitarist Peter Buck, Fred Chalenor, Matt Chamberlain and Hector Zazou. This collective of musicians toured the west coast in May 2006.

In October 2006, ProjeKct Six played at select venues on the east coast of the U.S., opening for Porcupine Tree.

Fripp has contributed soundscapes to two songs for Porcupine Tree’s Fear of a Blank Planet. He is featured on the tracks "Way Out Of Here" and "Nil Recurring", the second of which was released in September 2007 as part of the "Nil Recurring" EP.