John Lefferts (December 17, 1785 – September 18, 1829) was a member of the Thirteenth United States Congress as a Democratic-Republican Representative from New York.
He was also a delegate to the New York State Constitutional Convention of 1821 and a member of the New York State Senate from 1820 to 1825.
He died in Brooklyn, New York and was interred in Greenwood Cemetery.