Marleaux Bassguitars is a boutique bass guitar maker founded in 1990 by Gerald Marleaux in Clausthal-Zellerfeld, Germany, where the small workshop continues to handcraft instruments. The company is known for ergonomic body designs, carefully selected and aged tonewoods (often sourced locally in the Harz region), and a focus on resonance and clarity rather than mass production, with output limited to a relatively small number of individually built basses each year.

The lineup centers on a handful of distinctive models including the Consat, Betra, Contra, Diva, Soprano, MBass, Votan and Votan XS, and the headless Spock, available in 4-, 5-, and 6-string configurations as well as fretless variants. Marleaux instruments have repeatedly received Best in Show recognition at the Winter NAMM Show.

The brand has a strong following among European session and jazz bassists, with players including Etienne Mbappé, Lars Lehmann, Marius Goldhammer, Ariane Cap, Anthony Wellington and David Pastorius listed among their roster of endorsed artists.

Marleaux Bassguitars has 5 products cataloged on Equipboard, including Electric Basses and Bass Effects Pedals.