James S. Trefil (born 1938) is an American physicist (Ph.D. in Physics at Stanford University in 1966) and author of more than thirty books. Much of his published work focuses on science for the general audience. Dr. Trefil has previously served as Professor of Physics at the University of Virginia and he now teaches as Robinson Professor of Physics at George Mason University. Among Trefil's books is Are We Unique?, an argument for human uniqueness in which he questions the comparisons between human intelligence and artificial intelligence. Trefil also regularly gives presentations to judges and public officials about the intersections between science and the law.