| Chamber: | Assembly |
| State: | New York |
| District: | 120 |
| Representative: | William Barclay |
| Party: | Republican |
| Residence: | Pulaski |
New York's 120th State Assembly district is one of the 150 districts in the New York State Assembly. It has been represented by Republican Minority Leader William Barclay since 2003.
This district encompasses most of Oswego County and portions of Cayuga County and Jefferson County.