Wood Custom Guitars is a Japanese boutique bass builder founded by luthier Kazuki Ueda (上田和希) and based in Higashi-Omi, Shiga Prefecture. Ueda trained at a guitar-making school in Osaka and spent years at a guitar factory in Matsumoto, Nagano, building OEM instruments before launching his own workshop. The brand name reflects his focus on wood selection — Ueda personally sources and curates all the timber used in the shop's instruments.

The lineup centers on electric basses, including the single-cut Supremacy, the Jazz Bass-inspired double-cut Vibe and Vibe Standard, and the Gene Standard-4. Configurations span four-, five-, and six-string models, passive and active electronics, and offerings like the Supremacy 6 with a curly Hawaiian koa top and 19mm string spacing. The shop also accepts fully custom orders.

The brand has developed a following among Japanese rock and indie bassists, with players from bands such as Cinema Staff (Sohei Mishima), tricot (Hiromi Hirohiro), and Yabai T-shirts Yasan (Aribobo) associated with the instruments. Distribution in Japan runs through retailers including Miki Gakki and Digimart, and individual builds are also traded through specialty bass shops.

Wood Custom Guitars has 6 products cataloged on Equipboard, including Electric Basses. Their gear is featured by 1 artist, with the strongest followings in Rock, Pop, and Blues. Notable users include Yunika Impact.