Karl DeWitt Warner (June 23, 1908 – September 5, 1995) was an American athlete, winner of a gold medal in 4 ÃÂ 400 m relay at the 1932 Summer Olympics.
At the Los Angeles Olympics, Warner ran the third leg in the American 4 ÃÂ 400 m relay team, which won the gold medal with a new world record of 3.08.2.
Warner died in Rochester, New York, aged 87.