Upper Nyack is a village incorporated in 1872 in the town of Clarkstown, Rockland County, New York, United States. It is located north of the village of Nyack, east of Valley Cottage, south of Rockland Lake State Park, and west of the Hudson River. The population was 2,063 at the 2010 census.
Upper Nyack has a Village Hall and a village law court, located in the same building on North Broadway. Upper Nyack is also home to the Empire Hook and Ladder Company No. 1, established in 1863, one of eight fire companies in the Nyack Joint Fire District.