Carl Henry Vogt, known professionally as Louis Calhern, was an American stage and screen actor. Well known to fans of film noir for his role as attorney Alonzo Emmerich, the pivotal villain in The Asphalt Jungle (1950), he was nominated for the Academy Award for Best Actor for portraying Oliver Wendell Holmes in the film The Magnificent Yankee later that year.

The Asphalt Jungle is a 1950 American heist film noir directed and co-written by John Huston, and starring Sterling Hayden and Louis Calhern, with Jean Hagen, James Whitmore, Sam Jaffe, John McIntire, and Marilyn Monroe in one of her earliest roles. Based on the 1949 novel of the same name by W. R. Burnett, it tells the story of a jewel robbery in a Midwestern city.