The Wappinger (/ˈwɒpɪndʒər/) were an Eastern Algonquian Munsee-speaking Native American people from what is now southern New York and western Connecticut. At the time of first contact in the 17th century they were primarily based in what is now Dutchess County, New York, but their territory included the east bank of the Hudson in what became both Putnam and Westchester counties south to the western Bronx and northern Manhattan Island. To the east they reached to the Connecticut River Valley, and to the north the Roeliff Jansen Kill in southernmost Columbia County, New York, marked the end of their territory.