New York State Route 30A (NY 30A) is a state highway in the Capital District of New York in the United States. It serves as a westerly alternate route of NY 30 from near the Schoharie County village of Schoharie to the Fulton County hamlet of Riceville, south of the village of Mayfield. While NY 30 heads generally north–south between the two locations and passes through Amsterdam, NY 30A veers west to serve the villages of Fonda and Fultonville and the cities of Johnstown and Gloversville. Along the way, it connects to several major east–west highways, including U.S. Route 20 (US 20) in Esperance and the New York State Thruway in Fultonville.