MK Whistles is a Scottish maker of precision low whistles, founded by whistlemaker Misha Somerville and operating from a workshop in Glasgow. The company focuses on tuneable aluminium whistles machined from aerospace-grade materials, with a design philosophy that avoids plastic in the body and slide. Their instruments are known for bright projection, stable tuning, and a distinctive voice that has made them a staple among low whistle players in Celtic and folk music circles.

The lineup centers on the mk Pro, the original model that established the brand's reputation, available across a range of keys including Low D, E, F, G, Ab and Low A. Other models include the mk Kelpie, the mk Chameleon, the mk Bass for deeper registers, and the mk Midgie, a compact high-D whistle aimed at players wanting a more portable instrument. MK also offers accessories, repair services, and educational content for players new to the low whistle.

MK Whistle has 2 products cataloged on Equipboard, including Whistles.