The Pennsylvania Furnace Mansion, also known as the Lyon Mansion, is an historic, American home that is located in Franklin Township in Huntingdon County, Pennsylvania.

It was listed on the National Register of Historic Places in 1990.

History and architectural features

Built in 1834 as the ironmaster's mansion at Pennsylvania Furnace, this historic structure is a 2+1⁄2- to 4-story, L-shaped, limestone dwelling that was designed in the Federal style. The 3+1⁄2-story front facade features a center entrance framed by a transom and sidelights. Also located on the property is a contributing privy.

It was listed on the National Register of Historic Places in 1990.