William Betts

• William Betts (chaplain), supporter of Anne Boleyn
• William Betts (umpire), baseball umpire
• William Betts (MP), Member of Parliament for Weymouth and Melcombe Regis, 1710, 1713 and 1715–1730
• William Vallance Betts, English architect
• William Betts, English contractor's agent and railway contractor, father of Edward Betts
• Billy Betts, English football player