Joseph Brennan

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), Auxiliary Bishop, Roman Catholic Archdiocese of Los Angeles since 2015
 * Joe Brennan (hurler) (born 1990), Irish hurler
 * Joe Brennan (rugby league) (1908–1949), Australian rugby league footballer