William Amherst

William Amherst may refer to:


 * William Amherst (British Army officer) (1732–1781), lieutenant colonel during the French and Indian War, MP for Hythe and Launceston
 * William Amherst, 1st Earl Amherst (1773–1857), Governor-General of Bengal
 * William Amherst, 2nd Earl Amherst (1805–1886), British peer
 * William Amherst, 3rd Earl Amherst (1836–1910), British peer and freemason
 * William Tyssen-Amherst, 1st Baron Amherst of Hackney (1835–1909), British Conservative Member of Parliament