The Delaware languages, also known as the Lenape languages, are Munsee and Unami, two closely related languages of the Eastern Algonquian subgroup of the Algonquian language family. Munsee and Unami were spoken aboriginally by the Lenape people in the vicinity of the modern New York City area in the United States, including western Long Island, Manhattan Island, Staten Island, as well as adjacent areas on the mainland: southeastern New York State, eastern Pennsylvania, New Jersey, and coastal Delaware.

Unami is an Algonquian language spoken by Lenape people in what was then the lower Hudson Valley area and New York Harbor area, New Jersey, Pennsylvania and Delaware, but later in Ontario and Oklahoma. It is one of the two Delaware languages, the other being Munsee. The last fluent speaker, Edward Thompson, of the Delaware Tribe of Indians, died on 31 August 2002. His sister Nora Thompson Dean (1907–1984) provided valuable information about the language to linguists and other scholars.