William Barrington

William Barrington may refer to:


 * William Barrington (English politician), English MP for St Germans 1588–1589
 * William Barrington, 2nd Viscount Barrington (1717–1793), British MP for Berwick and for Plymouth, Secretary at War and Chancellor of the Exchequer
 * William Barrington, 6th Viscount Barrington (1793–1867), British MP for Berkshire, chairman of Great Western Railway
 * William Barrington (diplomat) (1842–1922), his son, British Ambassador to Argentine and Sweden
 * William Barrington (Irish politician) (1857–1937), Irish Member of the Seanad Éireann 1922–1931