Diretório Monárquico do Brasil (English: Brazilian Monarchical Directory) was a monarchical institution established in Rio de Janeiro in 1890, one year after the proclamation of the republic, by Afonso Celso, Viscount of Ouro Preto, the last Prime Minister of the Empire of Brazil, entrusted by the former Princess Regent Isabel, to whom they considered Empress of Brazil after the death of her father Pedro II, in 1891, to organize the actions of Brazilian monarchists.

It was also in the institution's headquarters that Pedro de Alcântara, Prince of Grão-Pará, son of Isabel, signed his official resignation, which was issued by the directory itself.

The republic has risen on the bucklers of the mutinous soldiery, comes from a criminal origin, was carried out by means of an attack unprecedented in history and shall have an ephemeral existence!"

In 1908, when Prince Pedro de Alcântara signed his instrument of resignation, supposedly under pressure from his mother, to marry a Bohemian noblewoman, his mother Isabel, in the capacity of Head of the Imperial House of Brazil and recognized by the Monarchic Directory as Empress of Brazil, hastened to communicate the fact to them, sending it, in a letter of November 9, 1908, one of three copies of the resignation document.

Established in 1890, as a sort of unofficial representation of the heir to the abolished throne for political purposes, it was also, to a certain extent, an advisory body that the former Princess Regente Isabel used to listen to when it came to Brazilian affairs.