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.
Education and career
Born on September 25, 1883, in River Ridge, Monroe County, Alabama, McDuffie was educated by private tutors. He attended college at Southern University (now Birmingham–Southern College) in Greensboro and later attended Alabama Polytechnic Institute (now Auburn University) in Auburn, Alabama, where he in graduated with a Bachelor of Science degree in 1904. McDuffie received a Bachelor of Laws from the University of Alabama School of Law in 1908. He was admitted to the bar the same year. A Democrat, he was elected to the Alabama House of Representatives in 1907 and served until 1911. McDuffie was in private practice of law in Monroeville, Alabama from 1911 to 1919. He later became a prosecutor for the First Judicial Circuit Court of Alabama and served there until 1919.