John Flanagan or Jack Flanagan may refer to:

Sportspeople[edit]

• 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[edit]

• 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

See also[edit]

• Jon Flanagan (born 1993), English footballer
• John Flannagan (disambiguation)