William Barber, Bill Barber or Billy Barber may refer to:
Politicians William Barber (Ontario politician) (1808–1887), Canadian businessman and politician William Alonzo Barber (1843–1913), Wisconsin politician, soldier, businessman, banker, and educator William Barber (New Zealand politician) (1857–1943), New Zealand MP William Barber (Bedford MP) (fl. 1388–1417), English politician William Barber (Dunwich MP) (fl. 1403–1429), English politician William P. Barber (1907–1984), justice of the Connecticut Supreme Court William Edward Barber (1876–1939), Ceylonese lawyer and judge William Barber (Illinois politician), member of the Illinois House of Representatives, 1846–1848
Sports William Barber (Hambledon cricketer) (1734–1805), English cricketer of the Hambledon Club in the 1760s and 1770s William Barber (Sheffield cricketer) (1797–?), English cricketer, played for Sheffield William Barber (Nottinghamshire cricketer) (1881–1971), English cricketer who played for Nottinghamshire William Barber (cricketer, born 1906) (1906–1981), English cricketer William Barber (cricketer, born 1919) (1919–1989), English cricketer Bill Barber (born 1952), Canadian ice hockey player Bill Barber (tennis) (born 1970), American tennis player Billy Barber (boxer) (1928–2004), Australian boxer
Musicians Bill Barber (musician) (1920–2007), jazz musician (tuba) Billy Barber (musician), keyboardist and composer
Others William Barber II (born 1963), minister and social activist William Barber (engraver) (1807–1879), Chief Engraver of the United States Mint Sir William Barber, 1st Baronet (1860–1927), English solicitor, property developer and philanthropist William E. Barber (1919–2002), United States Marine Corps colonel and Korean War recipient of the Medal of Honor William Swinden Barber (1832–1908), Gothic Revival and Arts and Crafts architect
See also William Barbour (disambiguation)