William Stanley

William Stanley may refer to:

• William Stanley (Battle of Bosworth) (c. 1435–1495), English military leader in the Wars of the Roses
• William Stanley (16th century MP), Member of Parliament (MP) for Lancashire
• William Stanley (Elizabethan) (1548–1630), English military commander under Queen Elizabeth I
• William Stanley (MP for Southampton) (1610–1678), English merchant and politician who sat in the House of Commons in 1660
• William Stanley, 6th Earl of Derby (1561–1642), English nobleman
• William Stanley (1640–1670), English MP for Liverpool
• William Stanley (priest) (1647–1731), English academic, Archdeacon of London and Dean of St Asaph
• William Stanley, 9th Earl of Derby (c. 1655–1702), English nobleman
• William Owen Stanley (1802–1884), British MP and Lord Lieutenant of Anglesey
• William Stanley (inventor) (1829–1909), founder of Harris Academy South Norwood school
• William A. Stanley (1831–?), American Civil War sailor and Medal of Honor recipient
• William E. Stanley (1844–1910), American politician, Governor of Kansas
• William Stanley, Jr. (1858–1916), American physicist and electrical engineer
• William Stanley (Hawaii) (1872–1939), Irish lawyer and judge of the Republic of Hawaii
• William Stanley (football manager), British footballer and first manager of Coventry City F.C.
• William O. Stanley, American professor