New York's 2nd congressional district is a congressional district for the United States House of Representatives along the South Shore of Long Island, New York. It includes southwestern Suffolk County and a small portion of southeastern Nassau County. The district is currently represented by Republican Andrew Garbarino.

Suffolk County is the easternmost county in the U.S. state of New York. It is bordered to its west by Nassau County, to its east by Gardiners Bay and the Atlantic Ocean, to its north by Long Island Sound, and to its south by Great South Bay. The county is part of the Long Island region of the state, of which it comprises the eastern two-thirds.