There are a number of lakes named Lake Saint Clair or Lake St Clair.
- Lake Saint Clair (North America) lies between the Canadian province of Ontario and the US state of Michigan.
- Lake Saint Clair (Arizona), a reservoir built in 1974
- Lake Saint Clair (Virginia)
- Lake St Clair (Tasmania) in Australia
- Lake St Clair (New South Wales) also in Australia.
See also:
- Saint Clair Lake in Washington state
