1840 in Brazil

Events in the year 1840 in Brazil.

Incumbents
Monarch: Pedro II

Events

 * Last remaining group of Cabanagem rebels, under leadership of Gonçalo Jorge de Magalhães, surrenders
 * Ragamuffin War: rebels of the Riograndense Republic refused an offer of amnesty by the Empire of Brazil, although it was clear that they had no chances of winning

Births

 * 9 June: Custódio José de Melo, admiral and politician (d. 1902)