Marbletown is a town in Ulster County, New York, United States.

It is located near the center of Ulster County, southwest of the City of Kingston.

The area was settled around 1638, and received its land patent (to Henry Beekman, Thomas Garton, and Charles Brodhead) in 1703.

The community of Marbletown once served briefly as the state capital, after the city of Kingston was burned by the British during the American Revolutionary War.

26.1% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older.