Bellport is a village in the Town of Brookhaven in Suffolk County, on the South Shore of Long Island, in New York, United States. The population was 2,084 at the 2010 census.

The Incorporated Village of Bellport is named after the Bell family, early settlers of the area. South Country Road (Main St.) in the village features little businesses such as antediluvian shops, artist galleries, small inns, restaurants, and a utility center. These family-run businesses gain community sustain from the Bellport Chamber of Commerce. Bellport is also home to the Gateway Playhouse, a professional summer theater in operation past 1950.

The land that is now Bellport was purchased along gone what is now the hamlet of Brookhaven (then called Fireplace Neck) and western South Haven from the Unkechaug Indians in 1664 by settlers from easily reached Setauket, who were attracted by the plentiful harvests of salt hay. The part that became Bellport was named Occumbomock Neck. Jonathan Rose was the first surviving settler in the 1680s, and by 1720 the Rose family owned much of Occumbomock Neck. In 1829, Captain Thomas Bell, a Scottish immigrant, bought house there. He sold sections of it, and by 1843 the village had 30 dwellings and 200 inhabitants. He distorted the say to Bell-Port (now Bellport), envisioning a seaport, since Bellport was very close to the Old Inlet, a breach in the barrier island Fire Island, which gave Bellport simple access to the door ocean. With Colonel William Howell, Bell built a marina and a road to the dock. But the breach healed over, and Bellport then again became a tourist attraction, with rich visitors coming by railroad and later coach from New York City. Although anything seven hotels eventually closed, the last in the 1950s, Bellport remained associated with rich New Yorkers, who eventually acknowledged year-round residences. After World War II, nearby Camp Upton was converted into Brookhaven National Laboratory, bringing in more, highly educated, year-round residents.

Bellport was incorporated as a village in 1910. On July 4, 1980, the Bellport Academy and Bellport Village Historic District were listed upon the National Register of Historic Places.