Douglas Spencer (born July 4, 1910 – March 5, 1960) was an American actor, best known for his roles in classic science fiction films and film noirs during the 1940s and 1950s.

Spencer was born in Baltimore, Maryland. He was drawn to the entertainment industry early on and began his career in theater before transitioning to films. He often played characters with a tough, no-nonsense edge, making him a popular choice for a variety of roles in films of the time.