| Agency Name: | Ministry of Intergovernmental Affairs |
| Type: | Ministry |
| Formed: | 1978 |
| Jurisdiction: | Government of Ontario |
| Minister1 Name: | Doug Ford |
| Minister1 Pfo: | Minister of Intergovernmental Affairs |
| Minister2 Name: | Norm Miller |
| Minister2 Pfo: | Parliamentary Assistant to the Minister of Intergovernmental Affairs |
The Ministry of Intergovernmental Affairs is responsible for intergovernmental affairs between the Canadian province of Ontario and the other provinces and territories and the Canadian government. The ministry's goal is to strengthen national unity and Ontario's role within Canada. The current minister is Doug Ford, who also served as the premier of Ontario; the position is often held concurrently by the premier.
The Provincial Secretary and Registrar of Ontario, Minister of Economics and Provincial Relations and Ministry of Federal-Provincial Relations were the positions formerly responsible for intergovernmental affairs.
Asterisks indicate ministers who were concurrently Premier of Ontario.