| Birth Date: | 22 June 1901 |
| Birth Place: | St. Louis, Missouri, United States |
| Sport: | Water polo |
Oliver A. Horn (June 22, 1901 - October 10, 1960) was an American water polo player who competed in the 1924 Summer Olympics. He was born in St. Louis, Missouri. In 1924 he won the bronze medal with the American water polo team. He played all five matches.[1]