Better Mousetrap Guitars is a small-shop luthiery founded in 2010 by Matt Kiefer in Ypsilanti, Michigan. Kiefer, who studied electrical engineering before turning to instrument building, handcrafts custom basses, guitars, and ukuleles one at a time, with typical builds taking four to six months from start to delivery.

The shop is best known for its bass guitars, including the single-cut Aurora and the 535SC, often featuring figured tonewoods such as ash and purpleheart. Builds are heavily personalized, with customers collaborating on wood selection, electronics, and aesthetics, and receiving progress photos throughout the build process.

Rather than producing a fixed catalog, Better Mousetrap operates as a one-builder custom shop, emphasizing direct artist-to-luthier collaboration over mass production.

Better Mousetrap has 2 products cataloged on Equipboard, including Electric Basses. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include Aaron Bruch.