John J. O’Sullivan is a retired judge from the United States. He completed his Juris Doctor degree in 1985 at the University of Miami and holds a Bachelor’s degree from the State University of New York at Albany. He served as a U.S. Magistrate Judge from 1999 to 2022. Before his appointment to the bench, he was the Chief of the Criminal Division of the U.S. Attorney’s Office for the Southern District of Florida, where he began his career in 1986. Over the years, he held several senior positions, including Chief of the Narcotics Section, Senior Litigation Counsel, and Deputy Chief and Acting Chief of the Economic Crimes Section. John J. O’Sullivan investigated several high-profile cases of public corruption involving law enforcement officers, government officials, and judges. Notably, he worked on Operation Courtroom, a judicial corruption case that resulted in the indictment of several state judges and attorneys. In August 1995, he was appointed Deputy Independent Counsel in the investigation of the late Secretary of Commerce, Ron Brown, a role he held for one year. From 1978 to 1985, he served as a Special Agent in the Criminal Investigation Division of the Internal Revenue Service. He is also an experienced lecturer, delivering training sessions at the International Law Enforcement Academies in Budapest, Hungary, and Gaborone, Botswana, as well as at the National Advocacy Center, the Federal Law Enforcement Training Center, the FBI Academy, and the Inspector General’s Academy.
_03_03.png)
