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.

Two hundred years prior, Claus Jansen Purarent of Bergen Township (now Jersey City) received a patent from Governor Phillip Carteret for 640 acres (260 ha) of land north of Tappan.

Jansen sold 100 acres (40 ha) to Dowe Harmensen Tallman, and the rest was inherited by his son Cornelius Clausen, who assumed the surname of Kuyper (Cooper).

Following the extension of the Northern Railroad of New Jersey into the area in the mid-19th century, rapid growth ensued.

Town government no longer being seen as an effective means of dealing with the needs of Nyack proper, village incorporation was discussed.

[3] In 1909, the village was known locally as "Goosetown", probably due to a Colonel Vose, who lived on Highmount Avenue and kept geese which he drove daily down to the river, thus giving the thought that Upper Nyack was full of/for the birds.