Old Furnace may refer to:
United Kingdom The Old Furnace, Staffordshire, England
United States Old Furnace, Delaware, Sussex County Old Furnace, Massachusetts, a village in the town of Hardwick, Worcester County Old Furnace, Pennsylvania, Union County Old Furnace State Park, a public recreation area in Killingly, Connecticut Old Furnace Wildlife Area, a state wildlife area in Sussex County, Delaware
Other places Old Furnace, Ironbridge, a village in Shropshire, England