Back Door to Hell is a 1964 Filipino-American war film concerning a three-man team of United States soldiers preparing the way for Gen. MacArthur's World War II return to the Philippines by destroying a Japanese communications center. It was produced on a relatively small budget and received lukewarm reviews.

John Hackett wrote the script on the boat from the US to the Philippines. Jack Nicholson was writing the script to Flight to Fury at the same time.Hellman, Nicholson and Hackett also made the film back to back with Flight to Fury (1964).