Inwood is a hamlet and census-designated place (CDP) in Nassau County, New York, United States. The population was 9,792 at the 2010 census.
Inwood is included among the Five Towns, an informal grouping of villages and hamlets in Nassau County on the South Shore of western Long Island adjoining the border with Queens County in New York City. Despite the name, none of the communities are towns. In addition to Inwood, the Five Towns is usually said to be composed of the villages of Lawrence and Cedarhurst, the hamlet of Woodmere, and "The Hewletts", which consist of the villages of Hewlett Bay Park, Hewlett Harbor and Hewlett Neck and the hamlet of Hewlett, along with Woodsburgh. The "towns" most commonly included as constituents of the "Five Towns" are all within the Town of Hempstead. Inwood is represented as part of the Town's 3rd District by Councilman Bruce A. Blakeman.
Inwood is located at 40°37′09″N 73°44′45″W.
According to the United States Census Bureau, the CDP has a total area of 2.1 square miles (5.4 km2), of which, 1.7 square miles (4.4 km2) of it is land and 0.4 square miles (1.0 km2) of it (20.19%) is water. Inwood also has a park located on a bay with a launching pad into Mott's Basin. The park is called Inwood Park.