Harrison Ellenshaw (born Peter Ellenshaw, July 20, 1945 in Harrisburg, Pennsylvania) is an American matte painter, following his British father Peter Ellenshaw. He started his career at Walt Disney Studios. He later joined George Lucas's effects studio Industrial light and Magic (ILM), where he produced many of the matte visual effects backgrounds for the films Star Wars (1977) and The Empire Strikes Back (1980). He then returned to Disney to work on the film Dick Tracy (1990), and eventually headed Disney Studio's effects department, Buena Vista Visual Effects (BVVE). He was also visual effects supervisor for Tron (1982), where he had the distinction of being the first person to have that credit in a film.
He and his father were nominated for an Academy Award for their work on Disney's film The Black Hole (1979).
Harrison Ellenshaw is now pursuing his passion for fine art painting.
His son Michael Ellenshaw has directed a short film while his sister Lynda Thompson is also a visual effects artist.