Brian Barnett Duff
Brian Barnett Duff (born 1930) is a former United States federal judge.
Duff was in the United States Navy Lieutenant, JAG Corps from 1953 to 1956 and served in the U.S. Naval Reserve from 1957 to 1961. He was an Assistant to C.E.O., Banker's Life and Casualty from 1962 to 1967. For a year Duff was a Vice president and general counsel, R. H. Gore Co. from 1968 to 1969 and in private practice from 1965 until 1976 in Chicago, Illinois.
Career as a judge 
From 1971 to 1976, Duff was a Member in the Illinois House of Representatives. He was a judge on the Circuit Court of Cook County, Criminal Division from 1976 to 1979, then at Circuit Court of Cook County, Law Jury Division from 1979 to 1985.
Duff was a federal judge on the United States District Court for the Northern District of Illinois. On August 1, 1985, Duff was nominated by President Ronald Reagan to a new seat created by 98 Stat. 333. He was later confirmed by the United States Senate on October 16, 1985, and received his commission on October 17, 1985. He resigned on October 10, 1996.
- Griffin, Richard (April 2, 2008). News travels far and reconnects peers. Wicked Local – West Roxbury Transcript.
- Davidson, Jean (July 31, 1985). "Reagan taps Judge Duff for federal bench." Chicago Tribune.
- Possley, Maurice; O Connor, Matt (October 11, 1996). "Judge steps down after decade of controversy." Chicago Tribune.
- Brian Barnett Duff at the Biographical Directory of Federal Judges, a public domain publication of the Federal Judicial Center.