Erin is a hamlet and census-designated place in the town of Erin in Chemung County, New York, United States.

It is in the valley of Newtown Creek, a west-flowing (and later south-flowing) tributary of the Chemung River, which in turn is a tributary of the Susquehanna River.

New York State Route 223 passes through the center of Erin, leading west 3.5 miles (5.6 km) to Breesport and 7 miles (11 km) to NY-13 near the village of Horseheads.

Route 223 leads northeast 5.7 miles (9.2 km) to NY-224 in the valley of Cayuta Creek, which then leads 2.5 miles (4.0 km) farther east to Van Etten.

This article about a location in Chemung County, New York is a stub.