William Moritz (May 6, 1941 – March 12, 2004), film historian, specialized in visual music and experimental animation. His principal published works concerned abstract filmmaker and painter Oskar Fischinger. He also wrote extensively on other visual music artists who worked with motion pictures, including James and John Whitney and Jordan Belson; Moritz also published on German cinema, Visual Music, color organs, experimental animation, avant-garde film and the California School of Color Music.