South Mountain is a mountain in Greene County, New York and partially in Schoharie County, New York.

It is located in the Catskill Mountains southwest of West Durham.

Ashland Pinnacle is located west-southwest, and Steenburg Mountain is located north of South Mountain.

The 1,498-acre South Mountain State Forest is a popular destination in the area that offers hiking, camping, hunting and skiing.

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