Instruō is a Eurorack modular synthesizer company based in Glasgow, Scotland, founded by composer and instrument designer Jason Lim. The first Instruō-branded module, the Troika triple oscillator, was released in September 2016, and the company has since grown into a small team operating as a creative co-op. Lim's stated approach is to "design selfishly" — building modules he personally wants to play — which has yielded a catalog that blends analog circuitry with selective use of digital control.

The range spans oscillators, filters, utilities, and more unusual signal processors. Notable modules include the arbhar granular processor, the øchd (a 4HP module housing eight analog LFOs, developed in collaboration with Ben "DivKid" Wilson), the Harmonàig chord generator, the Cš-L analog oscillator, the Lúbadh stereo looper, and the tanh[3] saturation/mixer. Beyond individual modules, Instruō has released the Seashell, a compact semi-modular instrument paired with companion software for DAW integration, and the SCÍON controller.

Instruō modules are often associated with the boutique/experimental end of the Eurorack market, valued for tactile front panels, hand-assembled construction, and a reputation for sonic character. The company also maintains virtual versions of its modules for VCV Rack, extending the hardware designs into software environments.

Instruō has 36 products cataloged on Equipboard, including Modular Synthesizers. Their gear is featured by 7 artists, with the strongest followings in Electronic, Pop, and Rock. Notable users include Andrew Huang, Richard Devine, and Joey Walker. Most Instruō products fall in the mid-tier range — professional-grade without flagship pricing.