An Unseen Enemy
- År: 1912
- Land: United States of America
- Genre: Drama
- Studio: American Mutoscope & Biograph
- Nøgleord: race against time, menace, thief, silent film, mortal danger, safecracker, safe deposit box, peril, young sisters, sisters
- Direktør: D.W. Griffith
- Cast: Lillian Gish, Dorothy Gish, Robert Harron, Elmer Booth, Grace Henderson, Harry Carey