New York State Route 426

New York State Route 426
Map of southwestern New York with NY 426 highlighted in red
Route information
Maintained by NYSDOT
Length	13.32 mi[1] (21.44 km)
Existed	1930[2]–present
Major junctions
South end	PA 426 at the Pennsylvania state line in French Creek
Major intersections	I-86 / NY 17 / Southern Tier Expressway in Mina
North end	PA 426 at the Pennsylvania state line in Mina
Location
Country	United States
State	New York
Counties	Chautauqua
Highway system
New York Highways Interstate US State Reference Parkways
← NY 425 → NY 427

New York State Route 426 (NY 426) is a state highway located entirely within Chautauqua County, New York, in the United States. It runs just over 13 miles (21 km) from one section of the Pennsylvania state line to another, passing through two small hamlets and providing the Southern Tier Expressway (Interstate 86 or I-86 and NY 17) with its westernmost exit in New York. NY 426 is the westernmost north–south state highway in New York.

At both crossings of the state line it continues as Pennsylvania Route 426 (PA 426). It is the only other state highway besides NY 440 that can claim the distinction of being a middle segment of another state's similarly-numbered highway. The New York alignment has remained virtually unchanged since it was assigned as part of the 1930 renumbering of state highways in New York, while the designations of the roads it connects to in Pennsylvania have varied over the years. The two segments of PA 426 were established at different times in the 1940s.