John or Johnny Flynn may refer to:
Arts and entertainment John Flynn (director) (1932–2007), American film director Johnny Flynn (born 1983), British actor and musician John Flynn (Marvel Cinematic Universe), fictional character
Law and politics John Flynn Jr. (born 1820), American politician in Wisconsin John E. Flynn (1912–2003), American politician from New York John Gerrard Flynn (born 1937), British ambassador to Venezuela, the Dominican Republic and Haiti, and Angola John Flynn (Australian politician) (1953–2024), Australian politician John Flynn (New Brunswick politician) (born 1954) John Flynn (Irish politician) (died 1968), Fianna Fáil politician from Kerry John J. Flynn, former district attorney of Erie County, New York, chairman of the National District Attorneys Association
Sports John Flynn (baseball) (1883–1935), American baseball player John Flynn (rugby league) (1884–1918), English rugby league footballer John Flynn (cricketer) (1890–1952), Australian cricketer John Flynn (footballer, born 1948), English footballer John Flynn (Gaelic footballer) (born 1984), Irish Gaelic footballer
Others John Flynn (minister) (1880–1951), Australian presbyterian minister and medical missionary John T. Flynn (1882–1964), American journalist John P. Flynn (1922–1997), United States Air Force general John J. Flynn, American labor union leader John Joseph Flynn (born 1955), American paleontologist
See also John Flinn (baseball) (born 1954), American baseball player John Flinn (politician) (died c. 1900), Canadian politician and prison warden Jonny Flynn (born 1989), American basketball player John Flynt (1914–2007), American politician; U.S. Representative from Georgia