Good corporate governance practices and their mechanisms are applicable to public administration entities, as well as private entities, focusing on relating the political objectives in an efficient and effective way, as well as giving transparency to information in a reliable way about their acts. Thus, the present research aimed to analyze the level of adoption of good practices of the transparency principle of corporate governance by the Controllerships of the Brazilian States. In this sense, it was sought to investigate the reports made public in order to analyze these documents, and then a questionnaire was applied to the Brazilian State Comptrollers, with the purpose of gaining more detailed knowledge about the content of these reports. The results reveal that, after more than two decades of the LRF of 2000, and more than a decade of the Transparency provisions, added by Law 131 of 2009, most Brazilian State Controllerships still disclose their external reports below expectations in their electronic portals, even in a digital age. Therefore, we conclude that most Brazilian State Controllers have a low level of adoption of good practices in the transparency principle of corporate governance, even though these agencies are, as a rule, responsible for the implementation of good corporate governance practices in the state public administration. This result points to a less than ideal performance, which makes social control and inspection of public administration acts by citizens in favor of the common welfare impossible.