James Duffy
James Duffy may refer to:
Sportsmen
- James E. Duffy (American football), American football player and lawyer
- Jimmy Duffy, Canadian Olympian and winner of the 1914 Boston Marathon
- Jim Duffy (rugby league), rugby league footballer
- James F. Duffy, American football coach
- Jim Duffy (umpire), American baseball umpire
- Jim Duffy (footballer), Scottish football player and manager with Morton and Dundee
- Jim Duffy (baseball coach), American college baseball coach
- Jamie Duffy, Irish footballer in 2007 FAI Cup, 2008 Dundalk F.C. season and 2008 Dundalk F.C. season
- James Duffy, English cricketer in MCC University matches in 2005
Others
- James E. Duffy Jr., retired associate justice of the Hawaii State Supreme Court
- James Duffy (Irish publisher), Irish publisher of Nationalist and Roman Catholic books, bibles and religious texts
- James Duffy (VC), Irish recipient of the Victoria Cross
- James Duffy, a character in the short story "A Painful Case" by James Joyce
- James Albert Duffy, first bishop for the Diocese of Grand Island
- James P. B. Duffy, U.S. congressman from New York
- Jim Duffy (journalist), Irish historian and political commentator
- Jim Duffy (animator), American animator
- Jim Duffey, Virginia secretary of technology
- Jamie Duffy (American musician)
- Jamie Duffy (Irish musician)