William Grant
William Grant may refer to:
Politicians
- Sir William Grant (Master of the Rolls), Member of the Parliament, 1790–1812; Master of the Rolls, 1801–1817
- William Grant (Northern Ireland politician), Unionist M.P. for the Northern Ireland House of Commons
- William Grant (seigneur), Scottish-born businessman, seigneur and political figure in Lower Canada
- William Grant, Lord Grant, Scottish Unionist politician and judge
- William Grant, Lord Prestongrange, Scottish politician and judge
- William M. Grant, politician in Saskatchewan, Canada
Sportsmen
- William St Clair Grant, Scottish rugby player
- William Grant (footballer), English footballer, played for Blackpool F.C.
- Bill Grant (Australian footballer), former Australian rules footballer
Military
- Sir William Keir Grant, British Army general
- Sir William Lowther Grant, Royal Navy officer
- William Grant (general), Australian Army colonel and temporary Brigadier General in World War I
Others
- William Grant (businessman), founder of the company William Grant & Sons, which distils Scotch whisky and other spirits
- William Grant (fur trader), Scottish-born fur trader in Lower Canada
- St. William Grant, Jamaican trade unionist and activist
- William Grant (New Zealand), New Zealand shepherd, stock dealer, landowner
- William Grant Naboré, American classical pianist
- William F. Grant, Canadian plant geneticist, biosystematist, educator, and environmental advocate
- William Thomas Grant, American philanthropist and founder of the W. T. Grant stores
- William James Grant, English painter
- William Grant (priest), Archdeacon then Dean of Tuam
- William K. Grant, American diplomat
- William Grant (physician), Scottish physician
- William Grant, journalist and founder of the Stornoway Gazette
- William Grant, see Fred M. Hechinger Grand Prize for Distinguished Education Reporting