| Ervin Roszner | |
| Order: | Minister besides the King of Hungary |
| Term Start: | 29 May 1915 |
| Term End: | 15 June 1917 |
| Predecessor: | István Tisza |
| Successor: | Tivadar Batthyány |
| Birth Date: | 19 December 1852 |
| Birth Place: | Varsány, Kingdom of Hungary |
| Death Place: | Telekes, Kingdom of Hungary |
| Profession: | politician |
| Party: | Liberal Party, Constitution Party, Party of National Work, Constitution Party of 48 |
Baron Ervin Roszner (19 December 1852 - 2 October 1928) was a Hungarian politician, who served as Minister besides the King between 1915 and 1917.