Hiawatha National Forest is a 894,836-acre (362,127 ha) National Forest in the Upper Peninsula of the state of Michigan in the United States. Commercial logging is conducted in some areas. The United States Forest Service administers this National Forest; it is physically divided into two subunits, commonly called the Eastside 46°14′N 84°50′W and Westside 46°08′N 86°40′W.

The Upper Peninsula of Michigan—also known as Upper Michigan or colloquially the U.P.—is the northern and more elevated of the two major landmasses that make up the U.S. state of Michigan; it is separated from the Lower Peninsula by the Straits of Mackinac. It is bounded primarily by Lake Superior to the north, separated from the Canadian province of Ontario at the east end by the St. Marys River, and flanked by Lake Huron and Lake Michigan along much of its south. Although the peninsula extends as a geographic feature into the state of Wisconsin, the state boundary follows the Montreal and Menominee rivers and a line connecting them.