Mysterious Doctor Satan
- Tahun: 1940
- Negara: United States of America
- Aliran: Aksi, Petualangan, Kejahatan, Cerita Fiksi
- Studio: Republic Pictures
- Kata kunci: saving the world, killer robot, secret identity, trapdoor, masked vigilante, movie serial
- Direktur: William Witney, John English
- Pemeran: Eduardo Ciannelli, Robert Wilcox, William Newell, C. Montague Shaw, Ella Neal, Dorothy Herbert