Helena Carter was an American film actress in the 1940s and 1950s who is best known for her work in the film Invaders from Mars as Dr. Patricia Blake. From 1947 to 1953 she would appear in 13 films, during which time she also worked as a model.

Invaders from Mars is a 1953 American independent science fiction film directed by William Cameron Menzies and starring Jimmy Hunt, Helena Carter, Arthur Franz, Morris Ankrum, Leif Erickson, and Hillary Brooke. It was produced by Edward L. Alperson Jr. and released by 20th Century-Fox in SuperCinecolor. The film follows David MacLean, a young boy who witnesses a flying saucer behind his home one night. When his father investigates, he returns a changed man; soon David's mother, his neighbors, and others begin to act in the same way. David's panicked story is heard by Dr. Pat Blake, who takes him to astronomer Dr. Stuart Kelston. David soon convinces Kelston, who comes to believe that this is an invading vanguard from Mars.