Wenceslao Alfonso Sarmiento, also known as W.A. Sarmiento is a Peruvian-American modernist architect.
Sarmiento studied in various locations in South America, for eighteen months in the office of Oscar Niemeyer, before coming to the United States. He served as the head designer for the Bank Building Corporation of America from 1951 through 1961, after which he founded his own sixty-person Sarmiento Associates office based in St. Louis, Mo. He retired in 1980.
Sarmiento designed hundreds of banks and other buildings in the postwar years of bank modernization in downtowns and the construction of new suburban bank towers.