Harold Philip "Steve" Partenheimer (August 30, 1891 – June 16, 1971) was an American baseball player and rubber industry executive and innovator. Partenheimer played college baseball for Amherst College and then appeared in one game Major League Baseball with the Detroit Tigers on June 28, 1913. He later spent more than 50 years working in the rubber industry and was credited with developing a "run flat" tire used on American military vehicles.