| John Lefferts | |
| State: | New York |
| Term Start: | March 4, 1813 |
| Term End: | March 3, 1815 |
| Predecessor: | Ebenezer Sage |
| Successor: | Henry Crocheron |
| Birth Date: | 17 December 1785 |
| Birth Place: | Brooklyn, New York City, New York |
| Death Place: | Brooklyn, New York City, New York |
| Party: | Democratic-Republican |
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.