New York State Route 313 (NY 313) is a state highway in Washington County, New York, in the United States. It begins at NY 22 in the village of Cambridge and intersects with two county routes on its journey from Cambridge to the Vermont state line in Salem, where it connects to Vermont Route 313 (VT 313). NY 313 was assigned as part of the 1930 renumbering of state highways in New York.

NY 313 begins at an intersection with NY 22 (South Park Street) at the southern end of the village of Cambridge. NY 313 proceeds northeast from NY 22 along Gilbert Street, as a two-lane asphalt commercial/residential street. Bypassing the village's downtown, the route enters the eastern sections of Cambridge, crossing an intersection with County Route 67 (CR 67; East Main Street). At this intersection, NY 313 changes names from Gilbert Street to Maple Avenue, continuing northeast through Cambridge until just north of Spring Street, where the route crosses into the town of Cambridge.

Now loose of the name Maple Avenue, NY 313 winds northeast through the town of Cambridge, becoming a two-lane farm road, entering the town of White Creek. Continuing the same progression through White Creek, NY 313 soon leaves White Creek for the town of Jackson. In Jackson, the route bends further to the northeast an intersection with Plains Road. Now in the hamlet of The Plains, NY 313 crosses along the base of Peaked Rock, crawling through farms in Jackson. After several bends, the route joins a parallel of the Batten Kill River, remaining a rural two-lane roadway. After another bend, NY 313 enters the hamlet of Anaquassacook, which consists of several houses on both sides of the roadway. Now running alongside the Batten Kill River, NY 313 enters the town of Salem for a short distance before crossing back into Jackson.

NY 313 continues northeast through Jackson as a two-lane farm road, crossing an intersection with the eastern terminus of CR 61. At CR 61, the route bends eastward along the Batten Kill, crossing the river near an intersection with Hickory Hill Road. Continuing the parallel, NY 313 bends northward then eastward back into Salem. Just after the town line, NY 313 reaches the New York–Vermont state line, where the NY 313 designation terminates. The right-of-way continues east through Bennington County towards US 7 as VT 313 (Batten Kill Drive).

NY 313 was assigned to its current alignment as part of the 1930 renumbering of state highways in New York. There was initially no matching route on the Vermont side of the highway; however, the Vermont continuation was designated as VT 123 c. 1934.

The entire route is in Washington County.