Gordon Mumma (born March 30, 1935, in Framingham, Massachusetts) is a composer. He cofounded Ann Arbor's Cooperative Studio for Electronic Music with Robert Ashley, was a musician with the Merce Cunningham Dance Company (with John Cage and David Tudor) and was a member of the Sonic Arts Union with Ashley, Alvin Lucier, and David Behrman. He known most for his work with electronics, many devices of which he mostly builds himself.

Mumma was professor of music at the University of California-Santa Cruz where his composition students included Chris Brown, Joe Hannan, Daniel James Wolf, and Jonathan Segel.