Mr. Sardonicus
- Ano: 1961
- País: United States of America
- Gênero: Terror, Mistério
- Estúdio: William Castle Productions, Columbia Pictures
- Palavra-chave: mask, leech, grave, castle, baron, flashback, torture, masked man, disfigured face, disfigurement, 19th century
- Diretor: William Castle
- Fundida: Ronald Lewis, Audrey Dalton, Guy Rolfe, Oskar Homolka, Vladimir Sokoloff, Erika Peters