William Maxwell may refer to:
Arts William Maxwell (engraver) (c. 1766–1809), printer of the Sentinel of the Northwest Territory newspaper in Cincinnati, Ohio W. B. Maxwell (William Babington Maxwell, 1866–1938), British novelist William Hamilton Maxwell (1792–1850), Scots-Irish novelist William James Maxwell (1843–1903), Scottish-born sculptor in Australia William Maxwell (American writer) (1908–2000), American editor and writer
Education William Maxwell (educator) (1784–1857), president of Hampden–Sydney College William Henry Maxwell (educator) (1852–1920), superintendent of public schools in New York City
Military William Maxwell (Continental Army general) (1733–1796), Irish-born American soldier from New Jersey in the American Revolutionary War William C. Maxwell (1892–1920), American pilot in the United States Air Force William Henry Maxwell (Royal Navy officer) (1840–1920), Royal Navy admiral
Politics and administration Sir William Maxwell, 5th Baronet, of Monreith, British MP for Wigtownshire, 1805–1812 and 1822–1830 William Maxwell (Australian politician) (1867–1921), gold miner and member of the Queensland Legislative Assembly William Maxwell (co-operator) (1841–1929), Scottish co-operative activist William Maxwell (railroad executive) (1794–1856), American business executive and politician, president of the Erie Railroad 1842–1843 William Edward Maxwell, British colonial official, governor of the Gold Coast George Maxwell (colonial administrator) (William George Maxwell, 1871–1959), British naturalist and colonial administrator in British Malaya and Straits Settlements William Herries Maxwell (1852–1933), British MP for Dumfriesshire, 1892–1895 and 1900–1906 William John Maxwell, naval governor of Guam
Sports William Maxwell (footballer) (1876–1940), Scottish footballer, manager of the Belgium national football team Bill Maxwell (1882–1917), Australian rules footballer
Other William Maxwell, 5th Lord Herries of Terregles (died 1603), Scottish politician William Maxwell, 5th Earl of Nithsdale (1676–1744), Catholic nobleman William Maxwell (clergyman) (1732–1818), clergyman and noted companion to Dr Johnson William Maxwell (doctor) (1769–1826), Scottish physician William Maxwell (journalist) (1860–1928), British journalist, soldier, writer and civil servant William Sutherland Maxwell (1874–1952), Canadian architect and a Hand of the Cause in the Bahá'í Faith William L. Maxwell (1934–2026), American computer scientist William Graham Henderson Maxwell (1928–1999), Australian geologist and academic
See also Billy Maxwell (1929–2021), American golfer Billy Maxwell (coach) (1942–2023), American track and field coach Charles William Maxwell (1775–1848), governor of the British crown colony of Sierra Leone 1811–1815 Willie Maxwell, birth name of American rapper Fetty Wap