David Randall Thom (born August 21, 1951) is an American sound designer and the director of sound design at Skywalker Sound.

Thom started his film career with a phone call to Walter Murch, who invited him to visit a re-mix of American Graffiti. Thom introduced himself to Murch, Ben Burtt, and Mark Berger, and said he had been working for a radio station in Berkeley, and wanted to work in film sound.