William Haywood may refer to:
Bill Haywood (William Dudley Haywood, 1869–1928), American union leader William Henry Haywood Jr. (1801–1852), North Carolina senator William Haywood (architect) (1876–1957), British architect and town planner William Haywood (cricketer) (1841–1912), British cricketer William Haywood (engineer) (1821–1894), British Surveyor and Engineer to the City of London Commissioners of Sewers Bill Haywood (baseball) (born 1937), American baseball former pitcher, coach and manager
See also William Hayward (disambiguation)