The Boundary Waters, also called the Quetico-Superior Country, is a region of wilderness straddling the Canada–United States border between Ontario and Minnesota, in the area just west of Lake Superior.

This region is part of the Superior National Forest in northeastern Minnesota, and in Canada it includes La Verendrye and Quetico Provincial Parks in Ontario.

The Boundary Waters region is characterized by a vast network of waterways and bogs within a glacially-carved landscape of Precambrian bedrock covered in thin soils and boreal forests.

The Boundary Waters is a popular destination for recreationalists pursuing camping, canoeing, and fishing as well as for those simply looking for natural scenery and relaxation.

The following communities are located anywhere from two to twenty miles from the boundary waters: Ely, Cook, Grand Marais, and Tofte in Minnesota and Atikokan in Ontario.