The Mink River is a 1.4 mi lacustuary, or freshwater estuary, near the northern tip of the Door Peninsula of Wisconsin, in the United States. It is noted for its excellent bass fishing, and the area boasts more than 200 species of birds. The river flows in a southeasterly direction into the estuary on Rowleys Bay, Lake Michigan, 4 mi southeast of the village of Ellison Bay. In 1989, 35 species of birds were found in two habitats in the Mink River Estuary.