The Rufus Arndt House in Whitefish Bay, Wisconsin, United States, was built in 1925. It was designed by Ernest Flagg in a style that suggests Tudor Revival and Cotswold Cottage and built by the Arnold F. Meyer & Co. One of the Ernest Flagg Stone Masonry Houses of Milwaukee County, this residence was listed on the National Register of Historic Places on September 12, 1985. The Arndt house is one of five of these "Flagg system" homes in its neighbourhood.