William Duffy
About
William Duffy, Bill Duffy or Billy Duffy may refer to:Bill Duffy (basketball), American basketball player and player agent
Bill Duffy (sportsman) (1866–1959), Australian sportsman
Billy Duffy, English musician
Billy Duffy (hurler) (1931–2005), Irish hurler
William Duffy, a pseudonym of William Dufris, an American voice actor
William Duffy (bishop), English Roman Catholic bishop
William Duffy (politician) (1865–1945), Irish nationalist politician
William James Duffy (1888–1946), Canadian politician
William J. Duffy (1916–2013), American jurist and legislator