Summitville is a hamlet in the town of Mamakating in Sullivan County, New York, United States.

Water runs downhill in both directions towards the Hudson and the Delaware Rivers.

Later the New York, Ontario and Western Railway (O&W) had a major station in Summitville.

The O&W had a junction off their main line that led to branch lines heading to Kingston to the northeast and Port Jervis and Monticello to the southwest.

This article about a location in Sullivan County, New York is a stub.