| Hans Oldag | |
| Nationality: | German American |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 2 March 1901 |
| Birth Place: | Lübtheen, Germany |
| Death Date: | August 1978 |
| Death Place: | North Tonawanda, New York, United States |
Hans Oldag (March 2, 1901 - August 1978) was an American long-distance runner. He competed in the marathon at the 1932 Summer Olympics.[1]