The Aroostook River is a 112-mile-long tributary of the Saint John River in the U.S. state of Maine and the Canadian province of New Brunswick. Its basin is the largest sub-drainage of the Saint John River.
Country: United States, Canada
State: Maine
Province: New Brunswick
Cities: Ashland, Maine, Washburn, Maine, Presque Isle, Maine, Caribou, Maine, Fort Farfield, Maine
Source confluence: Millinocket Stream and Munsungan Stream