William Maxwell
William Maxwell may refer to:
- William Maxwell (Continental Army general) (1733–1796), Irish-born American soldier from New Jersey in the American Revolutionary War
- General Sir William Maxwell, 7th Baronet of Calderwood (1754–1837)
- William Hamilton Maxwell (1792–1850), Scots-Irish novelist
- William John Maxwell, 18th Naval Governor of Guam
- William Maxwell (Erie RR), president of Erie Railroad, 1842–1843
- William Babington Maxwell (1866–1938), British novelist
- William Sutherland Maxwell (1874–1951), Canadian architect and a Hand of the Cause in the Bahá'í Faith
- William Keepers Maxwell, Jr. (1908–2000), American editor and writer
- William Maxwell (engraver) (1755–1809), printer of the Centinel of the Northwest Territory newspaper in Cincinnati, Ohio
- William Maxwell (footballer), manager of the Belgian national football team
- William Maxwell, 5th Earl of Nithsdale
- William Maxwell (journalist)
- William George Maxwell (1871–1959), British naturalist and colonial administrator in British Malaya and Straits Settlements
- William Jardine Herries Maxwell, British MP for Dumfriesshire, 1892–1895 and 1900–1906
- Sir William Maxwell, 5th Baronet, of Monreith, British MP for Wigtownshire, 1805–1812 and 1822–1830
See also