Harry Ryle Hopps was an American businessman and artist.
Harry was the son of artists George Hopps and Ann Hopps. George Hopps was a stage set designer. Harry Ryle Hopps and his brother Bert owned the United Glass Company of San Francisco from about1880 to about 1918, before Harry moved to Los Angeles, where he worked as an art director on a number of films such as The Thief of Bagdad.
Hopps is best known as the designer of the US Military's World War I recruiting poster Destroy this Mad Brute: Enlist, published in 1917.