Mary
- Tahun: 1931
- Negara: United Kingdom, Germany
- Genre: Mystery, Crime, Thriller
- Studio: British International Pictures, Südfilm
- Kata kunci: black and white
- Pengarah: Alfred Hitchcock
- Pelakon: Alfred Abel, Olga Tschechowa, Paul Graetz, Lotte Stein, Ekkehard Arendt, Jack Mylong-Münz