Sagamore Beach is a village of Bourne, Massachusetts fronting Cape Cod Bay and the east end of the Cape Cod Canal. It occupies the northern half of the Sagamore census-designated place. Along with Buzzards Bay and Bournedale, it is one of only three communities in Barnstable County that are north of the Cape Cod Canal.
Sagamore Beach is largely a residential area with a small commercial district near the Sagamore Bridge and Massachusetts Route 3A. A central recreation area provides tennis courts and sports fields. Parking and access to the Cape Cod Canal service road are available on Canal Road. Sagamore Beach also adjoins Scusset Beach State Reservation.
Recent development in the 2000s included a new post office, fire station, and several subdivisions.