The Will Marion Cook House is a historic townhouse at 221 West 138th Street, in the part of Harlem known as Strivers' Row in Manhattan, New York City. It was the home of Will Marion Cook (1869-1944), a leading African-American musician and composer of the period, from 1918 until his death in 1944. Cook was a major influence on later musicians including Sidney Bechet, Duke Ellington, and Josephine Baker. It was declared a National Historic Landmark in 1976.