Lemont Furnace is an unincorporated community and census-designated place in North Union Township, Fayette County, Pennsylvania, United States.

The community is part of the Pittsburgh metropolitan area.

[3] Penn State Fayette, The Eberly Campus, a Commonwealth Campus of the Pennsylvania State University system, is located 2 miles (3 km) north of Lemont Furnace.

The campus serves the students of Fayette, Greene, Somerset, Washington, and Westmoreland counties in southwestern Pennsylvania.

This Fayette County, Pennsylvania state location article is a stub.