Johnny Miler (August 10, 1910 – June 17, 1976), born John Miletich in Hocking, Monroe County, Iowa, was a professional boxer who competed in the 1932 Summer Olympics in the light-heavyweight class for the United States. In late 1932 or early 1933, Miler defeated future heavyweight champion Joe Louis in an amateur bout. Other notable fights included three professional bouts against "Slapsie" Maxie Rosenbloom that ended in two losses and a no decision, and a four round exhibition bout against Max Baer in 1934.