New York State Route 133

New York State Route 133
Map of Westchester County in southeastern New York with NY 133 highlighted in red
Route information
Maintained by NYSDOT
Length	8.71 mi[1] (14.02 km)
Existed	1930[2]–present
Major junctions
West end	US 9 in Ossining
Major intersections	NY 100 / Taconic State Parkway in Millwood Saw Mill River Parkway in Mount Kisco
East end	NY 117 in Mount Kisco
Location
Country	United States
State	New York
Counties	Westchester
Highway system
New York Highways Interstate US State Reference Parkways
← NY 132 → NY 134

New York State Route 133 (NY 133) is an 8.71-mile (14.02 km) long state highway in Westchester County, New York, in the United States. It begins at U.S. Route 9 (US 9) in the village of Ossining, goes through several hamlets in the town of New Castle (Millwood and Tompkins Corners), and ends at NY 117 in the village of Mount Kisco.

NY 133 between Ossining and the junction with NY 100 in New Castle was part of the Croton Turnpike, which connected Ossining to the hamlet of Somers, established in 1807. Dissolved by the state in 1849, the turnpike become a public road, and the section was added to the state highway system between 1903 and 1917. The portion of NY 133 from NY 100 to Mount Kisco became a state highway in 1908, after construction by William McCabe, a local general contractor. The alignment was designated as NY 133 in the 1930 state highway renumbering.