SeventySeven Guitars is a Japanese electric guitar brand launched in 2006 by Deviser Co., Ltd., the Matsumoto, Nagano-based builder behind Headway acoustics, Momose, and Bacchus. The brand was conceived as an electric counterpart to Headway's acoustic heritage, applying that factory's luthiery and material selection to hollow-body and semi-hollow instruments with a particular focus on acoustic resonance.

The lineup is organized around bird-named models, including the Exrubato (a thinline semi-hollow built around a laminated top), the Albatross (a full-depth archtop offered in jazz configurations), the Stork, and the deeper-bodied Hawk-Deep, alongside one-off special editions. Many instruments are offered through the Japan Tune-Up Series, in which individual guitars receive additional hand setup and finishing work at the Matsumoto workshop before shipping.

The guitars are distributed primarily in Japan and through specialty importers and dealers in Europe and North America, and carry a reputation among jazz and archtop players for craftsmanship and vintage-leaning pickup voicing rather than for mass-market visibility.

SeventySeven has 1 product cataloged on Equipboard, including Semi-Hollowbody Electric Guitars.