The Oregon Iron Company Furnace, or Oswego Iron Furnace, is an iron furnace used by the Oregon Iron Company, in Lake Oswego, Oregon's George Rogers Park, in the United States. The structure was added to the National Register of Historic Places in 1974 and underwent a major renovation in 2010. The current furnace is the only structure that remains of the original iron company, and is the oldest industrial landmark in the state of Oregon.