William Mitford (1744–1827) was an English historian.
William Mitford may also refer to:
William Mitford (singer-songwriter) (1788–1851), Tyneside songwriter of "The Pitman’s Courtship" and many others William Townley Mitford (1817–1889), Victorian Conservative Party politician in Britain William Mitford (c.1369–1423), MP for Northumberland William Kenyon Mitford (1857–1943), British Army officer, landowner and courtier