Cool Z is a Japanese guitar brand developed as a house label for the Shimamura Music retail chain, with instruments built at the Fujigen factory in Matsumoto, Nagano. It sits alongside Shimamura's higher-end History line as the more affordable sibling, sharing the same manufacturing lineage that has produced guitars for Fender Japan, Ibanez, and Fujigen's own FGN brand.

The lineup centers on bolt-on and set-neck versions of classic designs rather than original body shapes. Stratocaster-style models appear in the ZST series, Telecaster-style models in the ZTL series, and Les Paul-style singlecuts in the ZLS series, with bass models rounding out the catalog. Many examples carry Fujigen's Circle Fretting System, a patented approach in which the frets are installed along a slight arc to keep the strings closer to a uniform scale length across the fretboard.

Distribution has been concentrated in Japan through Shimamura stores, which has kept the brand less visible internationally than other Fujigen-made labels. Among players who track Japanese guitar output, Cool Z has a reputation as a value-oriented line offering Fujigen build quality — tight neck joints, clean fretwork, and solid hardware — at prices below the History and FGN ranges.

CoolZ has 5 products cataloged on Equipboard, including Solid Body Electric Guitars and Electric Basses.