William Blair

William Blair may refer to:

Willie Blair (born 1965), baseball player
William H. Blair (1821–1888), American Civil War Union Brevet Brigadier General
William Blair (judge) (born 1950), British judge; counsel to the sovereign (Queen's Counsel); elder brother of U.K. prime minister Tony Blair
William John Blair (1875–1943), Canadian engineer and politician
William M. Blair (1882–1982), investment banker from Chicago
William Blair (Nova Scotia politician) (born 1836), a farmer and political figure in Nova Scotia, Canada
William McCormick Blair, Jr. (born 1916), U.S. ambassador; son of William M. Blair
William W. Blair (1828–1896), leader in the Reorganized Church of Jesus Christ of Latter Day Saints (RLDS Church)
William Blair, director of the Signal Corps laboratories at Fort Monmouth
William Blair Tennent (1898–1976), New Zealand politician and cabinet minister
William Blair (Ayrshire MP) (died 1841), Member of Parliament for Ayrshire 1829–1832

Companies

William Blair & Company, a Chicago-based investment banking firm founded by William M. Blair