The Comptroller General of the Union (Portuguese: Controladoria-Geral da União, abbreviated CGU), was a branch of the Brazilian federal government tasked with assisting the president regarding the treasury and public assets and the government's transparency policies. These tasks were carried out by way of public audits, fraud deterrence procedures, and other sort of internal control, corruption prevention, and ombudsman activities. It was also the central body of the Federal Government Internal Control System, responsible for supervising, managing, and regulating the offices of the government.
The Chief Minister of the Comptroller General of the Union (Ministro-chefe da Controladoria-Geral da União) was appointed by the president and served as a member of the Brazilian cabinet.
The office of Comptroller General of Brazil was dissolved on May 12, 2016 by Provisional Measure 726/2016. Its functions were absorbed into the newly established Brazilian Ministry of Transparency, Supervision and Control.