RuttenFX is a boutique guitar effects pedal builder founded by René Rutten, guitarist for the Dutch band The Gathering. Drawing on decades of experience as a touring musician and producer, Rutten designs analog pedals aimed at players looking for character-driven tones for stage and studio use.

The lineup spans fuzz, distortion, overdrive, delay, boost/buffer, and preamp circuits, with models such as the Mandylion Crunchdrive, 741 Fuzz, Obscure Distortion, Kingsgold Fuzz, and Godstopper Fuzz. Several pedal names reference The Gathering's own discography, including the 1995 album Mandylion. Alongside standard releases, the company issues Black-Silver editions and limited runs.

Pedals are hand-built in small batches and sold direct through the RuttenFX online store, with an emphasis on analog circuitry rather than digital modeling.

RuttenFX has 1 product cataloged on Equipboard, including Overdrive Effects Pedals.