 Ontario electoral district | |
|---|---|
| Defunct provincial electoral district | |
| Legislature | Legislative Assembly of Ontario |
| District created | 1975 |
| District abolished | 1996 |
| First contested | 1975 |
| Last contested | 1995 |
Middlesex was a provincial riding in Ontario, Canada, that was created for the 1975 election. It was abolished prior to the 1999 election. It was redistributed into the ridings of Elgin—Middlesex—London, Lambton—Kent—Middlesex, London—Fanshawe, London North Centre, London West and Perth—Middlesex.