title: William Brennan
text: # William Brennan
  
  William Brennan may refer to:
  
  * William Brennan (Australian politician) (1865–1937), member of the New South Wales Parliament
  * William Brennan (baseball) (born 1963), American baseball pitcher
  * William C. Brennan (1918–2000), New York politician and judge
  * William J. Brennan Jr. (1906–1997), justice of the United States Supreme Court
  * William John Brennan (1938–2013), Australian Roman Catholic bishop
  * William Joseph Brennan (bishop) (1904–1975), Roman Catholic priest in Australia
  * Will Brennan (born 1998), American baseball player
  * Willis Brennan (1893–1950), American football player
  * Willy Brennan (died 1804), Irish highwayman
  * Bill Brennan (umpire) (1880–1933), Major League Baseball umpire and college football coach
  * Bill Brennan (boxer) (1893–1924), American boxer
  * Bill Brennan (activist) (born 1968), candidate for Governor of New Jersey in 2017
  * Bill Brennan (journalist), American sports journalist
  * Billy Brennan (born 1934), British ice hockey player
  