William McCarthy may refer to:
Bill McCarthy (Australian rules footballer) (1874–1940), Australian rules footballer Bill McCarthy (baseball) (1886–1928), American baseball player Bill McCarthy (NHS), Policy Director NHS England Bill McCarthy (politician) (1923–1987), Australian politician Bill McCarthy (dual player), Irish hurler and Gaelic footballer. W. H. L. McCarthy (1885–1962), Irish–British physician and British Army officer William C. McCarthy (1820–1900), American mayor William J. McCarthy (1919–1998), American labor leader William T. McCarthy (1885–1964), American federal judge William McCarthy, Baron McCarthy (1925–2012), British politician William McCarthy (baseball) (1882–1939), American baseball player
See also William McCarty (disambiguation)