| Eugène Ehrhart | |
| Birth Date: | 1906 |
| Birth Place: | Guebwiller |
| Death Place: | Strasbourg |
| Nationality: | French |
| Fields: | Mathematics |
| Alma Mater: | University of Strasbourg |
| Known For: | Ehrhart polynomial Ehrhart's volume conjecture |
Eugène Ehrhart (29 April 1906 – 17 January 2000) was a French mathematician who introduced Ehrhart polynomials in the 1960s. Ehrhart received his high school diploma at the age of 22. He was a mathematics teacher in several high schools, and did mathematics research on his own time. He started publishing in mathematics in his 40s, and finished his PhD thesis at the age of 60.