The Eternal Sin
- An: 1917
- Pays: United States of America
- Genre: Drame
- Studio: Herbert Brenon Film Corporation, Selznick Pictures
- Mot-clé: silent film, lost film, borgia, 15th century, borgias, lucrezia borgia
- Réalisateur: Herbert Brenon
- Jeter: Florence Reed, William E. Shay, Stephen Grattan, Richard Barthelmess, Alex Shannon, A.G. Parker