There are several people with the name James Duffy or Jim Duffy. For example:
- James E. Duffy, Jr. - United States Democratic Party nominee for the Hawaii Supreme Court[1] - see James E. Duffy, Jr
- James D. Duffy, M.D., neuropsychiatrist, and (former?) associate professor of clinical psychiatry at the University of Connecticut[1] - see James Duffy (psychiatrist)
- James Duffy, a Roman Catholic publisher of the 19th century[1] - see James Duffy (publisher)
- James Duffy, a character in the short story "A Painful Case" (part of the book Dubliners) by James Joyce
- Jim Duffy, author, political commentator, and Irish advisor to Australia's Republic Advisory Committee - see Jim Duffy
- Jim Duffy, former manager of Dundee United football teamclass="external">[1 - see Jim Duffy (football)