William Alington or Allington may refer to:
Sir William Alington (speaker) (died 1446), Speaker of the House of Commons, MP for Cambridgeshire, 1410, 1416, 1429 William Allington (of Horseheath) (1400–1459), MP for Cambridgeshire, 1433, 1436, 1439? Sir William Allington (of Bottisham) (after 1428–1479), Speaker of the House of Commons, MP for Cambridgeshire, 1472, 1477, married Joanne Ansty, daughter of John Ansty, in 1457 William Alington, 1st Baron Alington (1610/1–1648), Irish peer William Alington, 3rd Baron Alington (before 1641–1685), Irish peer, MP for Cambridge, 1664–1685 Bill Alington (1929–2024), New Zealand modernist architect Bill Allington (1903–1966), American Minor league baseball player and manager
See also Baron Alington Alington (surname)