Sir William Alington, Knt., (d.1446), Lord of the Manor of both Bottisham & Horseheath, Cambridgeshire, was Speaker of the House of Commons 1429-30, Treasurer of The Exchequer, and High Sheriff of Cambridgeshire and Huntingdonshire in 1438.

Descended from Sir Hildebrand de Alington, Under-Marshall to William 'The Conqueror' at the Battle of Hastings, Sir William Alington married Joanna, daughter of Sir William Burghe, Knight Banneret, Lord Chief-Justice of the King's Bench.

Alington's two sons, Sir William (d 5 July 1459), of Horseheath, and Robert, of Bottisham, both married daughters of the famous Sir John Argentyne, Knt.,of Great Wymondley Manor, Hertfordshire, by his wife Margaret Calthorpe (1380-1427). By this marriage, Sir William junior acquired the manor of Wymondley, which was held in Grand Sergeanty by the service of presentng the first cup at the Coronation of Kings of England; which service was performed by the Lords of that Manor into the 20th century.

William (Bill) Hildebrand Alington (born 1929-11-18 in Lower Hutt, New Zealand) is an important New Zealand Modernist architect, whose work has been awarded nationally, and regonised internationally.

Husband of New Zealand historian Margaret Alington.