| Middlesex West | |
| Province: | Ontario |
| Prov-Status: | defunct |
| Prov-Created: | 1867 |
| Prov-Abolished: | 1933 |
| Prov-Election-First: | 1867 |
| Prov-Election-Last: | 1929 |
Middlesex West was an electoral riding in Ontario, Canada. It was created in 1867 at the time of confederation. It was renamed Middlesex South in 1933 before the 1934 election.