| Sándor Ernszt | |
| Order: | Minister of Religion and Education of Hungary |
| Term Start: | 24 August 1931 |
| Term End: | 16 December 1931 |
| Primeminister: | Gyula Károlyi |
| Predecessor: | Kunó Klebelsberg |
| Successor: | Jenő Karafiáth |
| Birth Date: | 1870 4, df=yes |
| Birth Place: | Galgóc, Austria-Hungary |
| Death Place: | Budapest, Kingdom of Hungary |
| Profession: | politician |
| Party: | Catholic People's Party, KGSZP, KNEP |
Sándor Ernszt (21 April 1870 – 19 November 1938) was a Hungarian politician, who served as Minister of Religion and Education in 1931. He also served as Minister of Welfare and Labour from 1930.