Carl David Voltmer (October 24, 1902 – March 5, 1995) was an American football player and coach. He served as the head football coach at Defiance College in Defiance, Ohio in 1932 and Central Missouri State College—now known as University of Central Missouri—from 1935 to 1943, compiling a career college football coaching record of 37–36–10. As a college athlete, Voltmer played football and wrestled at the University of Iowa.