| Gratiot River | |
| Pushpin Map: | Michigan#USA |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Michigan |
| Mouth Location: | Lake Superior |
| Mouth Coordinates: | 47.3439°N -88.4525°W |
The Gratiot River is a 15adj=midNaNadj=mid[1] river on the north side of the Keweenaw Peninsula in Michigan. It is a tributary of Lake Superior.