| Mud Lake | |
| Other Name: | French: lac Mud |
| Location: | Peterborough County, Ontario |
| Coordinates: | 44.7994°N -81.2422°W |
| Part Of: | Great Lakes Basin |
| Outflow: | unnamed creek |
| Basin Countries: | Canada |
| Length: | 940m (3,080feet)[1] |
| Width: | 530m (1,740feet) |
| Elevation: | 187m (614feet)[2] |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Caption: | Location in southern Ontario |
Mud Lake (French: lac Mud) is a lake in South Bruce Peninsula, Bruce County in southwestern Ontario, Canada.[3] [4] [5] It is part of the Great Lakes Basin, and is about northwest of the community of Wiarton.
The lake has one unnamed inflow at the northeast. The primary outflow is an unnamed creek at the southwest which flows to Isaac Lake on the Rankin River, which in turn flows via the Sauble River to Lake Huron.