John Hennessey or Hennessy may refer to:
Religious figures
- John Hennessy (bishop) (1825–1900), American Roman Catholic archbishop of Dubuque, Iowa
- John Joseph Hennessy (1847–1920), Irish-born prelate of the Roman Catholic Church in Kansas
Sportspeople
- John F. Hennessey (1900–1981), American tennis player
- John Hennessey (rugby league), Welsh rugby league footballer
- John Hennessy (American football) (born 1955), American football player
- Jackie Hennessy (born 1940), Irish footballer
Others
- John Pope Hennessy (1834–1891), Governor of Hong Kong, grandfather of John Pope-Hennessy
- John David Hennessey (1847–1935), English-Australian author, newspaper editor and Protestant minister
- John A. Hennessy (1859–1951), American special investigator
- John W. Hennessey Jr. (1925–2018), American academic and educator
- John Pope-Hennessy (1913–1994), British art historian and museum director, grandson of John Pope Hennessy
- John J. Hennessey (1921–2001), American four-star army general
- John L. Hennessy (born 1952), American computer scientist; former president of Stanford University
- John M. Hennessy (born 1936), American financier and philanthropist
See also
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: