Third Eye Guitars is an electric guitar line associated with the French builder Custom 77, marketed with the tagline "Alternative Brand for Alternative Bands." The lineup leans toward extended-range and baritone instruments aimed at heavier and alternative genres, with models such as the Lust For Life, London's Burning (including an MKII and a baritone version), Breakdown, and China Girl.

Production sits largely in Korea, with higher-spec baritone models assembled in France. Common appointments on the upper-tier builds include set-neck mahogany construction, 27" baritone scale lengths, Bare Knuckle pickups, and GraphTech hardware. The brand has been covered on player communities such as SevenString.org and listed through Reverb.

Third Eye has 5 products cataloged on Equipboard, including Extended Range Guitars and Solid Body Electric Guitars. Their gear is featured by 2 artists, with the strongest followings in Rock. Notable users include Éric Poncet and Paul C. Wilson.