Henri C. Jaffa (13 April 1905 – 14 August 1988) was the Technicolor consultant who worked on the 1939 MGM film The Wizard of Oz. The touchiness of their color process inspired the Technicolor Motion Picture Crop. to provide its own consultants: each Hollywood studio that made a movie in Technicolor had to hire a company consultant to supervise the results. Henri Jaffa served as color consultant for 150 Hollywood films over a two-decade career. He worked on some noteworthy musicals, including An American in Paris (1951) and Singin' in the Rain (1952). From 1943 to 1954 he was "on loan" from Technicolor to MGM and worked only on their projects.