The Blaine Smith House in southeast Portland in the U.S. state of Oregon, is a two-story single dwelling listed on the National Register of Historic Places. Built in 1909 in an Arts and Crafts architectural style, it was added to the register in 1991. Blaine Smith (1870–1935), a long-time Portland resident, was associated with the Old Western Clay Manufacturing Company. He and his wife, Lillian, were the original owners of the property and lived in the house with their three children. Smith changed jobs and moved to Seattle in 1914, and the Smiths sold the property in 1919.