Day House may refer to:
Judge William T. Day House, Casa Grande, AZ, listed on the NRHP in Arizona Day House (Prescott, Arizona), listed on the NRHP in Yavapai County, Arizona Calvin Day House, Hartford, CT, listed on the NRHP in Connecticut Day House (Hartford, Connecticut), listed on the NRHP in Connecticut Day-Taylor House, Hartford, CT, listed on the NRHP in Connecticut Amasa Day House, Moodus, CT, listed on the NRHP in Connecticut Ivan W. Day House, Stanley, ID, listed on the NRHP in Idaho Holman Day House, Auburn, ME, listed on the NRHP in Maine Anna Day House, Cambridge, MA, listed on the NRHP in Massachusetts Fred Holland Day House, Norwood, MA, listed on the NRHP in Massachusetts Josiah Day House, West Springfield, MA, listed on the NRHP in Massachusetts C. C. Day House, Aberdeen, MS, listed on the NRHP in Mississippi Day House (Springfield, Missouri), listed on the NRHP in Missouri John W. Day House, Dryden, MI, listed on the NRHP in Michigan Erastus Day House, Lakewood, OH, listed on the NRHP in Ohio Edwin and Hattie Day House, Ballinger, TX, listed on the NRHP in Texas Day-Vandevander Mill, Harmon, WV, listed on the NRHP in West Virginia Isham Day House, Mequon, WI, listed on the NRHP in Wisconsin Dr. Fisk Holbrook Day House, Wauwatosa, WI, listed on the NRHP in Wisconsin