The Administrative Office of the United States Courts, or the Administrative Office (AO) for short, is the administrative agency of the United States federal court system, established in 1939. The central support entity for the federal judicial branch, the AO provides a wide range of legislative, administrative, legal, financial, management, program, and information technology support services to the federal courts.
The Thurgood Marshall Federal Judiciary Building houses the offices of the Administrative Office of the United States Courts, the Federal Judicial Center, the United States Sentencing Commission, and the Office of the Clerk of the Judicial Panel on Multidistrict Litigation.