Patrick Michael Duffy (born April 8, 1943) is a former United States district judge of the United States District Court for the District of South Carolina.

- Gender
- Male
- Race
- White
Prior employment
- Private practice, Charleston, South Carolina1971–1995
- Charleston County, South CarolinaAssistant county attorney · 1973–1974
Military PoliceU.S. Army · 1969–1971- Neighborhood Legal Assistance OfficeStaff attorney · 1968–1969
Appointments
1995–2019 · Appointed by William J. Clinton (Democratic)Term ended: Retirement
Education
J.D. · 1968- The CitadelB.A. · 1965