Joseph Brennan may refer to:
Politicians Joseph Brennan (senator) (died 1950), Irish senator Joseph Brennan (Clann na Poblachta politician) (1889–1968), Irish TD 1948–1951 Joseph Brennan (Fianna Fáil politician) (1912–1980), Irish government minister and Ceann Comhairle Joseph E. Brennan (1934–2024), U.S. politician, former Governor of Maine Joseph F. Brennan (born 1964), Pennsylvania politician
Others Joseph Brenan or Brennan (1828–1857), writer and Young Irelander Joseph Charles Brennan (1836–1872), English recipient of the Victoria Cross Joseph Brennan (civil servant) (1887–1976), Irish civil servant Joseph Brennan (basketball) (1900–1989), American basketball player Joseph Brennan (author) (born 1986), Australian author Joseph Payne Brennan (1918–1990), American writer and poet Joseph Vincent Brennan (born 1954), Bishop, Catholic Diocese of Fresno Joe Brennan (hurler) (born 1990), Irish hurler Joe Brennan (rugby league) (1908–1949), Australian rugby league footballer
See also John Joseph Brennan (1913–1976), Irish politician