Timothy R. O'Neill (born 1943) is an American U.S. Army officer, professor and camouflage expert, responsible for designing the digital camouflage pattern MARPAT. He has been called "father of digital camouflage". O'Neill is the author of two works of fiction. In 1979 he published The Individuated Hobbit: Jung, Tolkien, and the Archetypes of Middle-Earth.