East End (Long Island)

The East End of Long Island is constituted by the five townships at the eastern end of New York's Suffolk County, namely Riverhead, Southampton (which includes Westhampton), Southold, Shelter Island, and East Hampton. Long Island's North Fork and South Fork are part of the East End. "The East End" is sometimes shortened as "The End", but this latter term is also applied only to Montauk, the most easterly hamlet of the contiguous land mass.

The East End includes the most well-known part of Long Island's Viticultural Area, as well as The Hamptons and related resort areas. While other Suffolk County communities have long been considered suburban to New York City, the more rural East End townships have traditionally relied more upon agriculture and recreation. Residents of the five eastern townships had occasionally advocated seceding from Suffolk County to form a proposed "Peconic County", named for the Peconic Bay at the center of the East End's geography. The East End's North Shore is bounded by Long Island Sound, while its east and south are bounded by Block Island Sound and the Atlantic Ocean; the west is bounded by Brookhaven.

The East End is also home to Gabreski Air Base, Plum Island's Animal Disease Center, and the Shinnecock Indian Nation's Shinnecock Reservation.