William Barnett

William Barnett may refer to:


 * William Barnett (engineer) (1802–1865), British engineer
 * William Barnett (Georgia politician) (1761–1832), American politician and soldier
 * William Barnett (Cambridge University cricketer) (1830–1869), English cricketer
 * William Barnett (MCC cricketer) (fl. 1837), English cricketer
 * William Barnett, former mayor of Cadillac, Michigan
 * William Barnett, fictional character on That '70s Show
 * William Barnett, political candidate in Akaroa (New Zealand electorate)
 * William Barnett, squatter of Bendigo in Australia
 * William A. Barnett (born 1941), American economist
 * William P. Barnett (born 1958), American organizational theorist
 * William O. Barrnett (born c. 1946), American academic administrator, president of San Francisco Art Institute (1987–1994)
 * William O. Barnett, American doctor who developed the Barnett continent intestinal reservoir procedure
 * Will Barnet (1911–2012), American painter
 * Bill Barnett (born 1956), American football player