John Flanagan
John Flanagan or Jack Flanagan may refer to:
Sportspeople
- Jack Flanagan (footballer), English footballer
- John Flanagan (hammer thrower), Irish-American three-time Olympic champion in athletics
- John Flanagan (Limerick hurler), Irish hurler
- John Flanagan (Scottish footballer), played for St. Johnstone, Partick Thistle and Clyde
- John Flanagan (swimmer), Hawaiian swimmer/coach
- John Flanagan (Tipperary hurler), Irish hurler
Others
- John Flanagan (author), author of the Ranger's Apprentice series
- John Flanagan (sculptor), designed the Washington U.S. quarter dollar coin
- John C. Flanagan, pioneer of aviation psychology
- John J. Flanagan, New York State Senator
- John Mack Flanagan, American radio DJ
- John T. Flanagan, professor of literature
- Jack Flanagan (Australian politician), Australian politician
- Jack Flanagan (New Hampshire politician)
- John Flanagan, British actor, in Thriller
- John C. Flanagan, judge who lived in the John C. Flanagan House in Peoria, Illinois