William Watt

William Watt may refer to:


 * William Watt (athlete) (1886–1957), Irish Olympic athlete
 * William Watt (Australian politician) (1871–1946), Premier of Victoria and Speaker of the House of Representatives
 * William Watt (journalist), journalist working for the Blackpool Gazette
 * William Watt (miner) (1828–1878), California Gold Rush mining executive and California politician
 * William Watt (missionary) (1843–1926), Scottish missionary to the New Hebrides
 * William Hogg Watt (1818–1893), Member of Parliament in the Manawatu region of New Zealand
 * W. Montgomery Watt (1909–2006), Scottish historian and professor of Arabic and Islamic Studies
 * William Redfern Watt (1813–1894), New South Wales politician
 * Willie Watt (footballer, born 1861), Scottish footballer
 * Willie Watt (footballer, born 1946), Scottish footballer
 * Willie Watt (golfer) (1889–1954), Scottish golfer
 * Willie Watt (Batman Beyond), a character from the animated series Batman Beyond
 * Blackie Watt, American racing driver