William Betts may refer to: William Betts (chaplain) (died 1535), supporter of Anne Boleyn William Betts (umpire) (1865–1936), baseball umpire William Betts (MP) (died 1738), Member of Parliament for Weymouth and Melcombe Regis, 1710, 1713 and 1715–1730 William Vallance Betts (1862–1933), English architect William Betts (1790–1867), English contractor's agent and railway contractor, father of Edward Betts Billy Betts (1864–1941), English football player