Gary Yershon (born London 2 November 1954) is an English composer. His works include music for theatre, radio, television, film, and dance. He is an Associate Artist of the Royal Shakespeare Company.

He began his career as an actor. He worked as writer/translator (e.g. Ruslan and Lyudmila for the BBC, and as musical director for Phyllida Lloyd's 1994 production of The Threepenny Opera at the Donmar Warehouse.