Seventy Seven Guitars is a Japanese semi-hollow and hollow-body electric guitar brand operated by Deviser Co., Ltd. of Matsumoto, Nagano. The brand was launched in 2006 by luthier Takaesu Masayuki, drawing on the workshop expertise developed at Deviser's Headway acoustic division, which was established in 1977 — the source of the brand's name.

The lineup centers on archtop and thinline electrics built in small batches with a focus on resonant, acoustic-leaning tone. Core models include the EXRUBATO (a thinline semi-hollow), the ALBATROSS single-cut, and the fully hollow STORK and HAWK series, with variations such as the HAWK-DEEP deep-body and limited finish runs like the COAL BLACK and Old American Gold editions. Necks and frets are dressed in-house under the "Japan Tune-Up" program before shipping.

Seventy Seven sits alongside Bacchus, Headway, Momose, and STR within the Deviser group of guitar brands, and is regarded among Japanese builders for its attention to plate carving, binding work, and vintage-flavored hardware appointments on instruments aimed at jazz, blues, and roots players.

Seventy Seven has 1 product cataloged on Equipboard, including Solid Body Electric Guitars. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include Raja Syafiq.