The Eternal Sin
- annos singulos: 1917
- Patriam: United States of America
- genus: Drama
- Studio: Herbert Brenon Film Corporation, Selznick Pictures
- keyword: silent film, lost film, borgia, 15th century, borgias, lucrezia borgia
- Director: Herbert Brenon
- cast: Florence Reed, William E. Shay, Stephen Grattan, Richard Barthelmess, Alex Shannon, A.G. Parker
