William Clapp may refer to: William J. Clapp (1857–1934), American attorney and educator William H. Clapp (1879–1954), American painter and art curator William F. Clapp (1880–1951), specialist in mollusks at Harvard University's Museum of Comparative Zoology Bill Clapp, social entrepreneur, philanthropist and business executive Will Clapp (born 1995), American football center See also William Clapp House, a historic house in Dorchester, Massachusetts