Union Vale is a town in Dutchess County, New York, United States.

[3] The highest point is atop Clove Mountain, at 1,400 feet (430 m) above sea level.

The towns adjacent to Union Vale are Beekman to the south, LaGrange to the west, Washington to the north, and Dover to the east.

Sky Acres Airport, a general aviation facility, is located in the northwestern part of the town.

There is a private golf course, The Links at Union Vale, on the western side of the town.

A historic marker set by the state government marks the spot of the former hamlet.

The Oswego Meeting House and Friends' Cemetery was listed on the National Register of Historic Places in 1989.