Harold Thomas Keramidas (born August 31, 1940) is an American film and television editor. He is perhaps best known for his work in the Back to the Future film trilogy, co-editing with Arthur Schmidt. He has also edited the films Children of the Corn, About Last Night..., The Favor, Judge Dredd, among other films. His older brother George "Furious George" Keramidas is a soccer star. He is alumnus of University of Michigan and Wayne State University, graduating with a degree in Industrial psychology. He also studied ethnographic filmmaking at UCLA School of Theater, Film and Television.