The J.G. Deering House also known as the Dyer Library/Saco Museum is an historic house at 371 Main Street in Saco, Maine. Completed in 1870, it is a fine local example of Italianate style. Built for Joseph Godfrey Deering, it was given by his heirs to the city for use as a library. It was listed on the National Register of Historic Places in 1982.