The Tantramar Marshes, also known as the Tintamarre National Wildlife Area, is a tidal saltmarsh around the Bay of Fundy on the Isthmus of Chignecto. The area borders between Route 940, Route 16 and Route 2 near Sackville, New Brunswick. The government of Canada proposed the boundaries of the Tantramar Marshes in 1966 and was declared a National Wildlife Area in 1978.
The marshes are an important stopover for migrating waterfowl such as semipalmated sandpipers and Canada geese. Now a National Wildlife Area, the marshes are the site of two bird sanctuaries.
The name Tantramar is derived from the Acadian French tintamarre, meaning 'din' or 'racket', a reference to the noisy flocks of birds which feed there.
The Mi'kmaq, an Indigenous nation, historically inhabited the surrounding areas of the Tantramar Marshes. Communities currently on or bordering the marshes include, in New Brunswick: Aulac and Sackville, and on the Nova Scotia side: Amherst, and Fort Lawrence.
The landscape of the Tantramar Marshes has provided subject matter for the poets Charles G.D. Roberts, Bliss Carman, Douglas Lochhead, Marilyn Lerch and Elizabeth Bishop, painter Alex Colville, and photographer Thaddeus Holownia.