William Elphinstone (1431–1514) was a Scottish bishop.
William Elphinstone may also refer to:
Sir William Elphinstone, (died 1645), secretary to Elizabeth Stuart, Queen of Bohemia William George Keith Elphinstone (1782–1842), British Army officer William Elphinstone, 15th Lord Elphinstone (1828–1893), Scottish peer William Fullerton Elphinstone (1740–1834) East India Company ship's captain and Director.
See also Elphinstone (surname)