William Sullivan

William Sullivan may refer to:

Government

 * William J. Sullivan (1939–2022), American judge on the Connecticut Supreme Court
 * William H. Sullivan (1922–2013), United States diplomat
 * William Sullivan (Kentucky politician) (1921–2013), Kentucky state senator
 * William C. Sullivan (1912–1977), former head of the Federal Bureau of Investigation's intelligence operations
 * William T. Sullivan (1894–1968), Wisconsin state representative
 * Sir Bill Sullivan (politician) (1891–1967), New Zealand minister of labour
 * William P. Sullivan (1870–1925), Missouri state representative
 * William Wilfred Sullivan (1839–1920), premier of Prince Edward Island
 * William V. Sullivan (1857–1918), United States senator from Mississippi
 * William F. Sullivan (born 1957), associate justice for the Massachusetts Superior Court

Sports and related

 * William Sullivan (cricketer) (1877–1924), Australian cricketer
 * William Sullivan (field hockey) (1909–1981), Indian field hockey player
 * Bill Sullivan (outfielder) (1853–1884), Irish baseball player
 * Bill Sullivan (pitcher) (1868–1905), baseball player for the Syracuse Stars
 * Billy Sullivan (businessman) (1915–1998), owner of the Boston Patriots, an original franchise of the American Football League
 * Billy Sullivan (baseball, born 1875) (1875–1965), major league catcher
 * Billy Sullivan Jr. (1910–1994), his son, baseball catcher
 * William Sullivan (pitcher) (1864–1911), baseball player for the St. Louis Maroons

Others

 * William John Sullivan (born 1976), software freedom activist, hacker, and writer
 * William Laurence Sullivan (1872–1935), Unitarian clergyman and author
 * William L. Sullivan (author) (born 1953), American author
 * William D. Sullivan (born 1950), United States Navy officer
 * William Matheus Sullivan (1885–1947), American lawyer and art patron
 * William Holmes Sullivan (1836–1908), British painter
 * William N. Sullivan (1908–1979), American entomologist
 * William Kirby Sullivan (1822–1890), Irish philologist
 * Billy Sullivan (actor) (1891–1946), American character actor
 * William "Rocky" Sullivan, character in Angels with Dirty Faces
 * Bill Sullivan (artist) (1942–2010), American painter, printmaker and publisher