John Duffy may refer to:
Sportspeople
- John Duffy (footballer, born 1886) (1886–?), English football centre half for Bradford City
- John Duffy (footballer, born 1922) (1922–1996), Scottish football right back for Clyde and Norwich
- John Duffy (footballer, born 1929) (1929–2004), Scottish football wing half for Celtic, Arbroath and Southend
- John Duffy (footballer, born 1943), Scottish football wing half for Raith, Dunfermline, Darlington and Australian clubs
- John Duffy (Gaelic footballer), Gaelic football player
- John Duffy (rugby league) (born 1980), rugby league player
- John Duffy (soccer) (1905–1984), American soccer player
Others
- John Duffy (composer) (1926–2015), American composer
- John Duffy (economist) (born 1964), American economist
- John Duffy (mobster) (died 1924), American gang member, member of the North Side Gang
- John Duffy (writer), Canadian writer and political strategist
- John Duffy and David Mulcahy (both born 1959), the Railway Rapists, British rapists and murderers
- John A. Duffy (1884–1944), American bishop
- John F. Duffy (born 1963), legal academic
- John Gavan Duffy (1844–1917), Australian politician
- John J. Duffy, American Medal of Honor recipient
- John J. Duffy Jr. (1933–2019), American criminal defense attorney
- John Duffy (medical historian) (1915–1996), author of several medical history books
See also
- Jack Duffy (actor) (1882–1939), American film actor
- Jack Duffy (1926–2008), Canadian entertainer
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: