John Flanagan

John Flanagan or Jack Flanagan may refer to:

Sportspeople

 * Jack Flanagan (footballer) (1902–1989), English footballer
 * John Flanagan (hammer thrower) (1868–1938), Irish-American three-time Olympic champion in athletics
 * John Flanagan (Limerick hurler) (born 1956), Irish hurler
 * John Flanagan (Scottish footballer) (1942–2013), played for St. Johnstone, Partick Thistle and Clyde
 * John Flanagan (swimmer) (born 1975), Hawaiian swimmer/coach
 * John Flanagan (Tipperary hurler) (born 1947), Irish hurler

Others

 * John Flanagan (author) (born 1944), author of the Ranger's Apprentice series
 * John Flanagan (sculptor) (1865–1952), designed the Washington U.S. quarter dollar coin
 * John C. Flanagan (1906–1996), pioneer of aviation psychology
 * John J. Flanagan (born 1961), New York State Senator
 * John Mack Flanagan (1946–2018), American radio DJ
 * John T. Flanagan (1906–1996), professor of literature
 * Jack Flanagan (Australian politician) (John Flanagan, 1888–1949), Australian politician
 * Jack Flanagan (New Hampshire politician) (born 1957)
 * John Flanagan, British actor, in Thriller
 * John C. Flanagan, judge who lived in the John C. Flanagan House in Peoria, Illinois