Harold Douglas (born Harold Cohen; September 1, 1924 – March 7, 2014) was an American voice actor best known for performing thousands of voice-overs for movie trailers, television commercials, and stage plays over the course of a six-decade career. Born Harold Cohen in Stamford, Connecticut, on September 1, 1924, the son of Jewish immigrants from Eastern Europe, Samuel and Miriam Levenson Cohen, Douglas and his brother Edwin were primarily raised by their grandparents Sarah and Tevya Levenson after their mother died when Douglas was only nine.

He served in World War II, and attended the University of Miami in Florida as a drama major. Douglas began a career in radio in the 1950s. By the 1960s, he had become a producer for several prominent advertising agencies in New York City.