Mysterious Doctor Satan
- Jaar: 1940
- Land: United States of America
- Genre: Actie, Avontuur, Misdaad, Sciencefiction
- Studio: Republic Pictures
- Trefwoord: saving the world, killer robot, secret identity, trapdoor, masked vigilante, movie serial
- Regisseur: William Witney, John English
- Gips: Eduardo Ciannelli, Robert Wilcox, William Newell, C. Montague Shaw, Ella Neal, Dorothy Herbert