John McDuffie (September 25, 1883 – November 1, 1950) was a United States representative from Alabama and a United States district judge of the United States District Court for the Southern District of Alabama.

John McDuffie
Alabama Southern District Court
Born 1883 in River Ridge, AL
Died 1950 in Mobile, AL
FJC ID: 1546
- Gender
- Male
- Race
- White
Prior employment
- U.S. representative from Alabama1919–1935
- Private practice, Monroeville, Alabama1908–1919
- First Judicial Circuit, AlabamaProsecutor · 1911–1919
- AlabamaState representative · 1907–1911
Appointments
1935–1950 · Appointed by Franklin D. Roosevelt (Democratic)Term ended: Death
Education
LL.B. · 1908- Alabama Polytechnic Institute (now Auburn University)B.Sc. · 1904