Leopold Godowsky Jr. (May 27, 1900 – February 18, 1983) was an American violinist and chemist, who together with Leopold Mannes created the first practical color transparency film, Kodachrome.
Mannes and Godowsky's experimentation with color photography began in 1917, after seeing the film Our Navy in Prizma Color, which was advertised as a color film. Because of the low quality the boys felt cheated and decided to do something about it. They designed a movie camera and projector each with three lenses covered by orange-red, green and blue-violet filters. They took multiple black-and-white exposures and projected them back through the filters. They patented this system, but it was not a commercially viable process.
Godowsky studied violin at UCLA and became a soloist and first violinist with the Los Angeles and the San Francisco Symphony Orchestras. He also enrolled at UCLA to study physics and chemistry. He performed jointly with his father, Leopold Godowsky, one of the great pianists of the early twentieth century, using a rare Cremonese violin by Giuseppe Guarneri del Gesù, the 1734 "Prince Doria". Godowsky Jr married Frances Gershwin, sister of George and Ira Gershwin, who became a recognized painter and sculptor. Their son, Leopold Godowsky III, was also a concert pianist. By 1922, Godowsky had given up his orchestral jobs in California and moved back to New York City where he and Mannes worked as musicians. They experimented with color photography during their spare time.