New York State Route 70 (NY 70) is a short state highway in the western portion of New York in the United States. It travels through three different counties in just 18.01 miles (28.98 km) and is the primary road to and from the village of Canaseraga. The western terminus of the route is at an intersection with NY 436 in the Livingston County town of Portage. Its eastern terminus is at a junction with NY 36 in the Steuben County town of Dansville. Although NY 70 is mostly signed north–south, it follows a more southeast–northwest alignment and is considered an east–west route by the New York State Department of Transportation (NYSDOT). The portion of the route between Dalton and Canaseraga parallels both Canaseraga Creek and the Norfolk Southern Railway's Southern Tier Line.