New York's 1st State Assembly district is one of the 150 districts in the New York State Assembly. It has been represented by Democratic Assemblyman Tommy John Schiavoni since 2025, succeeding Fred Thiele.
District 1 is located entirely within Suffolk County, comprising the eastern portion of the county. The district includes the towns of Shelter Island, East Hampton, Southold, and portions of Southampton and Brookhaven. The district includes The Hamptons and Montauk.
The 1st district is entirely within New York's 1st congressional district, and overlaps the 1st and 3rd districts of the New York State Senate.
District 1 was located entirely within Suffolk County, comprising the southeastern portion of the county. The district included the towns of Shelter Island, East Hampton, Southampton, and a portion of Brookhaven. The district included The Hamptons and Montauk.