Black River is an river on the Upper Peninsula of the U.S. state of Michigan. The river flows into Lake Michigan at , approximately east of Naubinway.
The main branch of the river rises at in a marshy area in eastern Garfield Township near Cranberry Lake Bog. The East Branch rises at in Hudson Township and joins the main course at . All of the river's drainage basin is within Mackinac County, much of it within the Lake Superior State Forest.
Tributaries (from the mouth):