Cove Neck is a village located within the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York. As of the 2020 census, Cove Neck had a population of 293.

Cove Neck incorporated as a village in 1927.

Cove Neck is the site of the home of President Theodore Roosevelt. His estate, Sagamore Hill, is now a museum operated by the National Park Service. It attracts many visitors annually.

On January 25, 1990, Avianca Flight 052, which was operated by one of the airline's Boeing 707 jetliners, ran out of fuel before crashing into a hillside in Cove Neck. 73 out of the 158 passengers and crew on board died in the accident.

According to the United States Census Bureau, the village has a total area of 1.6 square miles (4.1 km²), of which 1.3 square miles (3.4 km²) is land and 0.3 square miles (0.78 km²), or 18.47%, is water.

The village is located on a peninsula projecting into Oyster Bay. It is located directly across from Centre Island.

As of the census of 2020, there were 293 people, 101 households, and 72 families in the village. The racial makeup of the village is 90.44% White, 0.68% American Indian or Alaska Native, 0.34% were of some other race alone, and 8.53% were of two races alone. Of those who were of two races alone, 1.02% were mixed White and Asian, 0.68% were mixed White and American Indian or Alaska Native, 0.34% were mixed White and Black, and 6.48% were mixed White and some other race.

As of the census of 2000, there were 300 people, 110 households, and 83 families in the village. The population density was 233.4 inhabitants per square mile (90.1/km²). Cove Neck is the least densely populated community in Nassau County. There were 140 housing units at an average density of 108.9 per square mile (42.0/km²). es living together, 7.3% had a female householder with no husband present, and 24.5% were non-families. 19.1% of households were one person and 11.8% were one person aged 65 or older. The average household size was 2.73 and the average family size was 3.16.