Madawaska might refer to:

• A transnational region straddling the border between Canada and the United States, encompassing the northern Saint John River Valley in New Brunswick and adjacent areas of far northern Aroostook County, Maine.
  • Madawaska County, the Canadian portion of the above-listed region, in New Brunswick
  • Madawaska, a town in Aroostook County, Maine
• Madawaska Valley, a township immediately to the east of Algonquin Provincial Park in Eastern Ontario, Canada

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