John Brennan may refer to:
Public officials
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Jack Brennan (born 1937), U.S. Marine officer and aide of Richard Nixon
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John Brennan (CIA officer)
John Owen Brennan (born September 22, 1955) is a former American intelligence officer who served as the Director of the Central Intelligence Agency (CIA) from March 2013 to January 2017. He served as chief counterterrorism advisor to U.S. Pres ...
(born 1955), former CIA Director
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John P. Brennan (1864–1943), Democratic politician in the U.S. state of Ohio
* John Brennan Hussey (born 1934), former mayor of
Shreveport, Louisiana
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John Joseph Brennan (1913–1976), Northern Ireland politician
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John Brennan (Irish senator) (1901–1977), Fianna Fáil politician
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John A. Brennan Jr. (born 1945), American lobbyist and Massachusetts politician
Sports
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J. J. Brennan (died 1944), Irish hurler
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John Brennan (Derry Gaelic footballer) (born 1942), Gaelic football manager and player
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John Brennan (Kerry Gaelic footballer), former Gaelic footballer
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Jack Brennan (footballer, born 1892) (1892–1942), English footballer for Bradford City and Manchester City
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John Brennan (American football) (1913–1982), American football player
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Jack Brennan (baseball)
Jack Brennan (born as Gottlieb Doering) was an American professional baseball catcher in the late 19th century. In his five-year career he played with the St. Louis Maroons, Kansas City Cowboys of the American Association, Philadelphia Athleti ...
(1862–1914), American baseball catcher
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John Brennan (athlete) (1879–1964), American track and field athlete
Artists
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Johnny Brennan (born 1961), American actor, screenwriter and voice actor
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John Wolf Brennan
John Wolf Brennan (born 13 February 1954) is an Irish pianist, organist, melodica player, and composer based in Weggis, Switzerland.
Career
Brennan was born in Dublin, Ireland. His family moved to Switzerland when he was seven years old. He be ...
(born 1954), Irish pianist, organist and composer
Other people
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John J. Brennan (businessman) John J. Brennan (born 1954), also known as Jack Brennan, served as Chairman of The Vanguard Group from 1996 to 2009, and was Vanguard CEO from 1996 until he was succeeded by William McNabb in 2008.
Career
Brennan joined Vanguard in 1982. For many ...
(born 1954), chairman and CEO of The Vanguard Group
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John Calder Brennan (1908–1996), U.S. historian
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John Brennan (doctor) (c. 1768–1830), Irish doctor
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Sidney Czira
Sidney Sarah Madge Czira (née Gifford; 3 August 1889 – 15 September 1974), known by her pen name John Brennan, was a journalist, broadcaster, writer and revolutionary. She was an active member of the revolutionary group Inghinidhe na hÉirean ...
(1889–1974), Irish journalist and revolutionary known by her pen name "John Brennan"
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John N. H. Brennan (1914–2010), Irish author, huntsman and solicitor
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John P. Brennan (priest), first American Catholic priest to declare bankruptcy
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John W. Brennan, United States Army general
See also
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John Brenan (disambiguation)
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John O'Brennan, Irish political scientist
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