William, Bill, or Billy Root may refer to: William Pitt Root (born 1941), American poet William Lucas Root (1919–2007), American information theorist Bill Root (ice hockey) (born 1959), Canadian retired NHL player Bill Root (bridge) (1923–2002), American professional bridge player, teacher, and writer Billy Root (cricketer) (born 1992), English cricketer Billy Root (saxophonist) (1934–2013), American jazz tenor and baritone saxophonist