Francis Duffy

Francis or Frank Duffy may refer to:


 * Francis Duffy (bishop) (born 1958), Roman Catholic Bishop of Ardagh and Clonmacnoise
 * Francis Clyde Duffy (1890–1977), Lieutenant Governor of North Dakota
 * Francis Noel Duffy, Irish Green Party politician for Dublin South-West
 * Francis P. Duffy (1871–1932), Roman Catholic priest in the U.S.
 * Frank Duffy (architect) (born 1940), British architect
 * Frank Duffy (baseball) (born 1946), Major League Baseball player
 * Frank Duffy (curler) (1959–2010), Scottish wheelchair curler
 * Frank Duffy (equestrian) (born 1937), American equestrian
 * Frank Duffy (labor leader) (1861–1955), American labor leader and secretary-general
 * Sir Frank Gavan Duffy (1852–1936), Australian judge