Fairmont Downtown Historic District is a national historic district located at Fairmont, Marion County, West Virginia.

Notable buildings include the Watson Building (1909–1911), U.S. Court House and Post Office (1940), Monongahela Valley Traction Freight House (1927), the Jacobs and Hutchinson complex, and the Library (1914).

The Marion County Courthouse and Sheriff's House and Robert H. Mollohan-Jefferson Street Bridge are located in the district and listed separately on the National Register of Historic Places.

[2] It was listed on the National Register of Historic Places in 1995.

This article about a property in Marion County, West Virginia on the National Register of Historic Places is a stub.