Daniel L. Fapp, A.S.C. (April 21, 1904 – July 19, 1986) was an American cinematographer, best known as director of photography for West Side Story (1961), for which he won an Academy Award for Best Cinematography, and The Great Escape (1963). He also was nominated for Academy Awards for his cinematography for Desire Under the Elms (1958), The Five Pennies (1959), One, Two, Three (1961), The Unsinkable Molly Brown (1964), Ice Station Zebra (1968) and Marooned (1969).