| Jacques Dumoulin | |
| Office: | Member of the Legislative Assembly of Quebec for Montmorency |
| Predecessor: | Joseph-Félix Roy |
| Successor: | Yves Prévost |
| Term Start: | 1939 |
| Term End: | 1948 |
| Birth Date: | 12 February 1898 |
| Birth Place: | Quebec City, Quebec |
| Death Place: | Sarasota, Florida |
| Party: | Liberal |
| Relations: | Louis-Alexandre Taschereau, uncle Robert Taschereau, cousin |
Jacques Dumoulin (February 12, 1898 - February 20, 1988) was a Canadian provincial politician and judge.
Born in Quebec City, Quebec, the son of Philippe-Benjamin Dumoulin and Marie-Louise Taschereau, Dumoulin was the member of the Legislative Assembly of Quebec for Montmorency from 1939 to 1948.
He was later a judge of the Exchequer Court of Canada from 1955 to 1970 and of the Appeal Division of the Federal Court of Canada from 1970 until 1972.