The Cape Cod National Seashore (CCNS) encompasses 43,607 acres on Cape Cod, in Massachusetts. CCNS was created on August 7, 1961, by President John F. Kennedy, when he signed a bill enacting the legislation he first co-sponsored as a Senator a few years prior. It includes ponds, woods and beachfront of the Atlantic coastal pine barrens ecoregion. The CCNS includes nearly 40 miles (64 km) of seashore along the Atlantic-facing eastern shore of Cape Cod, in the towns of Provincetown, Truro, Wellfleet, Eastham, Orleans and Chatham. It is administered by the National Park Service.

Cape Cod is an arm-shaped peninsula extending into the Atlantic Ocean from the southeastern corner of Massachusetts, in the northeastern United States. Its historic, maritime character and ample beaches attract heavy tourism during the summer months. The name Cape Cod, coined in 1602 by Bartholomew Gosnold, is the ninth oldest English place-name in the U.S.