William Greenwood may refer to:
Will Greenwood (born 1972), rugby player William Greenwood (Blessed), one of the Carthusian Martyrs, executed 1537 William Greenwood (politician) (1875–1925), MP for Stockport Bill Greenwood (baseball) (1857–1902), baseball player William Greenwood (cricketer) (1798–1872), English cricketer William Osborne Greenwood (1873–1947), British surgeon and a minister of religion