Horace L. Hahn was an American actor best known for working with Cecil B. DeMille on several films as a young man, including a supporting role in This Day and Age (1933). He also served in the Office of Strategic Services (OSS) during World War II, and assisted Justice Robert H. Jackson as an interrogator in connection with the prosecution of Nazi war criminals at the Nuremberg Trials.

This Day and Age is a 1933 American pre-Code film directed by Cecil B. DeMille and starring Charles Bickford and Richard Cromwell. It is one of his rarest films and has been released on home video through the Universal Pictures Vault Series DVD collection.