Island Park is a village located in the Town of Hempstead in Nassau County, New York, United States. It is a neighbor to Long Beach to the south, and Oceanside to the north. The population was 4,928 at the time of the 2020 census.

Island Park was developed by the Island Park-Long Beach Company as a resort community in the 1920s, after previous development plans for the area were cancelled due to the outbreak of World War I and the subsequent wartime efforts.

Island Park incorporated itself as a village in 1926. Its first mayor was Charles N. Talbot, who served in that capacity for 12 years.

In the 1950s, there was a proposal in which Island Park would have annexed the adjacent hamlet of Harbor Isle. The proposal was ultimately defeated, and to this day, Harbor Isle remains an unincorporated hamlet governed by the Town of Hempstead.

According to the United States Census Bureau, the village has a total area of 1.5 square miles (3.9 km²), all land.

The Village of Island Park is part of the Outer Barrier of Long Island and is bordered on the west by a man-made canal running parallel to Suffolk Road. Its northern borders follow another channel, while its eastern and southern borders are delineated by the rails of the Long Beach Branch of the Long Island Rail Road.

As of the 2020 census, Island Park had a population of 4,928. The median age was 41.6 years. 19.2% of residents were under the age of 18 and 15.8% of residents were 65 years of age or older. For every 100 females there were 96.7 males, and for every 100 females age 18 and over there were 94.3 males age 18 and over.

100.0% of residents lived in urban areas, while 0.0% lived in rural areas.