Gretsch 6120 is a classic orange hollowbody electric guitar with f-holes, first appearing in the mid-1950's with the endorsement of Chet Atkins. It was later adopted by rockabilly artist Eddie Cochran, but it never gained the popularity of Fender's Stratocaster or Gibson's Les Paul during its time of production. Gretsch ceased production of guitars in the late 70's, but values of these instruments soared when rockabilly artist Brian Setzer of the Stray Cats was seen playing an old 6120 in his early-80's music videos.

Gretsch subsequently came back into the guitar business and new 6120 guitars are widely available.

It is said that Pete Townshend of The Who used a 6120 on much of the classic "Who's Next" album.