Mr Drubbel is a boutique guitar and bass builder based in Purmerend, a city near Amsterdam in the Netherlands. The small shop produces handbuilt instruments, often using reclaimed and locally sourced woods, with a focus on offset-style electric guitars and basses.

Instruments from the workshop — such as the Dex model — typically feature lightweight reclaimed pine bodies, solid maple or walnut necks, and cellulose finishes. Hardware and electronics are drawn from builders like Schroeder, Kluson, and Schaller, with pickups from makers such as McNelly and Bare Knuckle. The shop also offers guitar mods and parts alongside its custom builds.

Mr Drubbel has 2 products cataloged on Equipboard, including Electric Basses. Their gear is featured by 1 artist, with the strongest followings in Rock, Pop, and Stage & Screen. Notable users include Henny Vrienten.