The Proclamation of the Republic was a military coup d'état that established the First Brazilian Republic on 15 November 1889. It overthrew the constitutional monarchy of the Empire of Brazil and ended the reign of Emperor Pedro II.
The coup took place in Rio de Janeiro, then capital of the Empire, when a group of military officers of the Imperial Army, led by Marshal Deodoro da Fonseca, staged a coup d'état without the use of violence, deposing Emperor Pedro II and the President of the Council of Ministers of the Empire, the Viscount of Ouro Preto.
A provisional government was established that same day, 15 November, with Marshal Deodoro da Fonseca as President of the Republic and head of the interim Government.