William Baker may refer to:

Artists and designers William Baker (fashion designer) (born 1973), English fashion designer William Baker of Audlem (1705–1771), English architect William A. Baker (1911–1981), American naval architect William Bliss Baker (1859–1886), American landscape artist William T. Baker (born 1956), American residential designer and author

Business leaders and owners William Baker (printer) (1742–1785), English printer William F. Baker (engineer) (born 1953), American partner at Skidmore, Owings & Merrill William F. Baker (television) (born 1942), retired American television executive William Meath Baker (1857–1935), English pottery owner and benefactor William O. Baker (1915–2005), former Bell Labs president

Military personnel William Baker (Indian Army officer) (1888–1964), British officer who served in the Indian Army William Baker (colonist) ( 1761–1836), British soldier and early Australian settler William Erskine Baker (1808–1881), British Indian Army officer William Clyde Baker Jr. (1904–1966), American major general who served in the Engineer Corps

Politicians American politicians William Baker (Kansas politician) (1831–1910), U.S. representative from Kansas William Baker (New York politician) (1795–1871), speaker of the New York Assembly in 1834 William Benjamin Baker (1840–1911), U.S. representative from Maryland William C. Baker (1858–1931), mayor of Providence, Rhode Island William Baker (Pennsylvania and Indiana politician) (1813–1872), Pennsylvania state legislator and mayor of Evansville, Indiana William H. Baker (1827–1911), U.S. representative from New York William Leonard Baker (1831–1893), Australian politician, member of the WA Legislative Assembly Bill Baker (politician) (William Pond Baker, born 1940), U.S. representative from California William R. Baker (1820–1890), mayor of Houston, Texas William Washington Baker (1844–1927), member of the Virginia House of Delegates William Y. Baker (1829–?), Wisconsin state assemblyman Will Baker (born 1965), American perennial candidate

Commonwealth politicians Sir William Baker (British politician) (1705–1770), British businessman and politician; member of parliament for Plympton Erle William Baker (1743–1824), British member of parliament for Aldborough, Hertford, Hertfordshire and Plympton Erle William Baker (Lower Canada politician) (1789–1866), politician in Lower Canada William George Baker (1885–1960), politician in Saskatchewan, Canada

Religious figures William Baker (bishop of Norwich) (1668–1732), bishop of Bangor and of Norwich in the Church of England William Baker (bishop of Zanzibar) (1902–1990), English Anglican bishop of Zanzibar William Baker (headmaster) (1841–1910), English headmaster and Church of England prebendary William Baker (priest) (1870–1950), Anglican archdeacon of Sheffield William Mumford Baker (1825–1883), American Presbyterian minister and author

Sports William Baker (baseball) (1866–1930), owner of the Philadelphia Phillies, 1913–1930 William Baker (Surrey cricketer) (1807–1885), English cricketer William de Chair Baker (1823–1888), English cricketer William Baker (Kent cricketer) (1832–1912), English cricketer William Baker (footballer) (1882–1916), British footballer for Plymouth Argyle Bill Baker (baseball) (William Presley Baker, 1911–2006), American baseball catcher Bill Baker (ice hockey, born 1882) (William Henry Baker, 1882–1916), Canadian hockey player Bill Baker (ice hockey, born 1956) (William Robert Baker), American hockey player Bill Baker (racing driver) (William Edwin Baker, 1931–1978), American NASCAR driver Billy Baker (footballer, born 1892) (William Edward Baker, 1892–1980), English footballer Billy Baker (footballer, born 1920) (William George Baker, 1920–2005), Welsh footballer

Others William Baker (engineer) (1817–1878), English railway engineer William Spohn Baker (1824–1897), American writer, collector and title examiner William Baker, real name of the fictional character Sandman William Morrant Baker (1839–1896), English surgeon and describer of Baker's cyst William E. Baker (1873–1954), United States federal judge William Baker, lynched on March 8, 1922, see lynching of William Baker Willie Baker, American Piedmont blues guitarist, singer and songwriter

See also Bill Baker (disambiguation)