Friedrich Kottler (December 10, 1886 – May 11, 1965) was an Austrian theoretical physicist.
He was a Privatdozent before he got a professorship in 1923 at the University of Vienna.
In 1938, after the Anschluss, he lost his professorship due to his Jewish ancestry.
With the help of Albert Einstein and Wolfgang Pauli, he immigrated to America from his hometown of Vienna, Austria, settling in Rochester, New York, where he worked at the Eastman Kodak Research Laboratory.
Besides optics, Kottler's professional pursuits focused on the theory of relativity.