The Master Key
- Tahun: 1914
- Negara: United States of America
- Aliran: Aksi, Petualangan, Drama
- Studio: Universal Film Manufacturing Company
- Kata kunci: movie serial
- Direktur: Robert Z. Leonard
- Pemeran: Robert Z. Leonard, Ella Hall, Harry Carter, Jean Hathaway, Alfred Hickman, Wilbur Higby
