* The Strange Case of Doctor RX (1942)
* The Mad Doctor of Market Street (1942)
* The Mystery of Marie Roget (1942)
* Invisible Agent (1942)
* The Black Cat (1941)
* Man Made Monster (1941)
* Horror Island (1941)
* The Black Cat (1934)
* The Mystery of Edwin Drood (1935)
* The Mystery of the Wax Museum (1933)
He was also involved in several other projects, including:
* The Phantom Creeps (1942), a serial film
* The Wolf Man (1941), which he produced, but left before it was completed
While Mark Hellman was not an actor, his contributions to the film industry as a producer were significant, especially in the horror and mystery genres. He is considered a key figure in the development of Universal's horror franchise in the 1930s and 1940s.