Joseph Brennan
Joseph Brennan may refer to:
Politicians
- Joseph Brennan (senator), Irish senator
- Joseph Brennan (Clann na Poblachta politician), Irish TD 1948–1951
- Joseph Brennan (Fianna Fáil politician), Irish government minister and Ceann Comhairle
- Joseph E. Brennan, U.S. politician, former Governor of Maine
- Joseph F. Brennan, Pennsylvania politician
Others
- Joseph Brenan or Brennan, writer and Young Irelander
- Joseph Charles Brennan, English recipient of the Victoria Cross
- Joseph Brennan (civil servant), Irish civil servant
- Joseph Brennan (basketball), American basketball player
- Joseph Brennan (author), Australian author
- Joseph Payne Brennan, American writer and poet
- Joseph Vincent Brennan, Auxiliary Bishop, Roman Catholic Archdiocese of Los Angeles from 2015 to 2019
- Joe Brennan (hurler), Irish hurler
- Joe Brennan (rugby league), Australian rugby league footballer