A fretless guitar is a guitar without frets. It operates in the same manner as most other stringed instruments and traditional guitars, but does not have any frets to act as the lower end point (node) of the vibrating string. On a fretless guitar, the vibrating string length runs from the bridge, where the strings are attached, all the way up to the point where the fingertip presses the string down on the fingerboard. Fretless guitars are fairly uncommon in most forms of western music and generally limited to the electrified instruments due to decreased acoustic volume and sustain in fretless instruments. However, the fretless bass guitar has gained fairly widespread popularity and many models of bass guitar can be found in fretless varieties. Fretless Electric Bass is particularly popular among Jazz, Funk and R&B players due to the similarity in feel and sound to the acoustic double bass.

Fretless guitars are not constrained with particular musical tunings, tuning systems or temperaments, as is the case with fretted instruments. This facilitates the playing of music in other than 12-tone scales; these scales are typically found in non-Western or experimental music. Fretless guitars produce a different sound than their fretted counterparts as well, because the fingertip is relatively soft (compared to a fret) and absorbs energy from the vibrating string much more quickly. The result is that the pizzicato on a fretless guitar has a more dampened sound. One can finger notes with one's nail like an Indian sarod player. This will sustain and brighten the sound. One can also combine bottleneck slide guitar with fretless fingered guitar playing to add an additional range of tonal possibilities that allows for more melodic and harmonic/chordal possibilities than some of the constraints common to traditional standard and open tuning slide guitar techniques.

Guthrie Govan (born 27 December 1971 in Chelmsford, Essex, England) is a virtuoso guitarist known for his work with the bands Asia (2001–2006), GPS, The Young Punx and The Fellowship as well as Erotic Cakes (a vehicle for his own music). He is a noted guitar teacher through his work with the UK magazine Guitar Techniques, Guildford’s Academy of Contemporary Music and currently the Brighton Institute of Modern Music. He is the 1993 winner of Guitarist magazine's "Guitarist of the Year" competition.

Govan began playing guitar aged three, encouraged by his father but initially learning mainly by ear. At the age of nine he and his brother Seth Govan played guitar on a Thames Television programme called Ace Reports. At secondary school he was exposed, via older classmates, to "shred" guitarists of the time.

After leaving school, Govan read English at the University of Oxford, though he left after a year to pursue a career in music. Around this time (by Govan’s own estimation, 1991) he sent demos of his work to Mike Varney of Shrapnel Records. Varney was impressed and offered him a record deal; ultimately however, Govan declined. Regarding his reasons he has explained: "it was as though all I really wanted to know was that I was good enough […] I found I was getting a bit wary of the shred movement."