New York State Route 257 (NY 257) is a state highway in eastern Onondaga County, New York, in the United States. It runs from a junction with NY 92 near the village of Manlius through downtown Fayetteville to an intersection with NY 290 at Manlius Center. The path of NY 257 has been state-maintained since 1918; however, the NY 257 designation only dates back to the 1940s, when it was assigned to the portion of its modern alignment north of Fayetteville. The remainder, originally part of NY 92, became part of NY 257 in the early 1960s.