Busuyi Guitar is a Georgia, USA-based instrument maker founded by Dr. Isola (also known as Dr. Ish), a multi-instrumentalist and academic who conceived the company's signature design concept while living abroad. The brand operates under the motto "delivering the future" and is best known for reinventing the double-neck guitar: rather than stacking two necks atop a single body as Gibson's EDS-1275 and similar designs do, Busuyi places a second neck on the back of the body, giving the instrument the dimensions of a conventional guitar while still offering two playable sides.

The catalog spans acoustic, electric, classical, headless, travel, and fretless models, with the double-sided concept available in a wide range of configurations — six- and twelve-string pairings, electric-and-bass hybrids, fanned-fret variants, and combinations of nylon and steel strings. Busuyi also positions itself around sustainability, claiming to use a fraction of the wood consumed by conventional guitar builders. Instruments are sold through the company's own site as well as Reverb and Guitar Center.

Busuyi has 4 products cataloged on Equipboard, including Extended Range Guitars, Acoustic-Electric Guitars, and Solid Body Electric Guitars. Their gear is featured by 1 artist, with the strongest followings in Rock and Folk, World, & Country. Notable users include Rob Scallon.