Hewlett Bay Park is a village in the Town of Hempstead in Nassau County, on the South Shore of Long Island, in New York.

Hewlett Bay Park is usually included as one of the Five Towns in the southwestern corner of Nassau County.

The Five Towns is usually said to comprise the villages of Lawrence and Cedarhurst, the hamlets of Woodmere and Inwood, and "The Hewletts", along with Woodsburgh.

8.9% of all households were made up of individuals, and 5.7% had someone living alone who was 65 years of age or older.

As of May 2022, the Mayor of Hewlett Bay Park is Alex Salomon and the Village Trustees are Jay Levy, Antonio Oliviero, and Gail Rubel.