Katherine Locke (June 24, 1910 - September 12, 1995) was a Broadway actress in the late 1930s. She was born in Kalakenchu, Russia and raised in the U.S. She appeared in films in the 1940s and 1950s as a supporting actress. She began her film work in the late 1930s in bit parts, but she is remembered today as a stage actress.
In addition to appearing on a successful Broadway production of Hamlet playing Ophelia, her stage credits include starring with John Garfield in Having a Wonderful Time, Fifth Column with Lee J. Cobb, and Clash by Night with Tallulah Bankhead.