Mark McGuire (b. 1986) is an american musician living and working in Portland, Oregon.

His principle instrument being the guitar, and various forms of electronic manipulation. Despite being best known as member of Cleveland electronic group Emeralds (alongside John Elliott and Steve Hauschildt), his solo work is as far reaching and expansive, with something in the region of 40 releases to his name, including releases for Wagon, Arbor, Weird Forest and Editions Mego..