Dufferin–Simcoe (provincial electoral district)
| Ontario electoral district | |
|---|---|
| Defunct provincial electoral district | |
| Legislature | Legislative Assembly of Ontario |
| District created | 1933 |
| District abolished | 1986 |
| First contested | 1934 |
| Last contested | 1985 |
Dufferin–Simcoe was an electoral riding in Ontario, Canada. It was created in 1934 during a major redistribution of Ontario ridings. It was abolished in 1986 before the 1987 election and merged into Simcoe West.