| Baltimore River | |
| Source1 Location: | Haight Township, Ontonagon County, Michigan |
| Source1 Coordinates: | 46.4861°N -89.1554°W |
| Mouth Location: | Ontonagon River, Michigan |
| Mouth Coordinates: | 46.6741°N -89.1426°W |
| Subdivision Type1: | Country |
| Mouth Elevation: | 702 ft. |
The Baltimore River is a 33.6adj=midNaNadj=mid[1] river in Michigan. It originates in Ontonagon County and flows into the Middle Branch of the Ontonagon River and thence into Lake Superior. The O Kun de Kun Falls are located on the river.