Jesselyn Radack (born December 12, 1970) is a former ethics adviser to the United States Department of Justice who came to prominence as a whistleblower after she disclosed that the Federal Bureau of Investigation (FBI) committed what she believed to be an ethics violation in their interrogation of John Walker Lindh (the "American Taliban" captured during the 2001 invasion of Afghanistan) without an attorney present, and alleged that the Department of Justice attempted to suppress that information.