Battle of Montevideo
Part of the Brazilian War of Independence
O Combate Naval de Montevidéu, by Trajano Augusto de Carvalho, 1938.
Date 21 October 1823 Location Río de la Plata, off of Montevideo, Uruguay Result Brazilian victory
Belligerents
Empire of Brazil	Kingdom of Portugal
Commanders and leaders
Pedro Antônio Nunes	Álvaro da Costa de Sousa de Macedo
Strength
Unknown	1 schooner 3 transports

The naval Battle of Montevideo (Portuguese: Batalha Naval de Montevidéu) of 21 October 1823 formed a part of the Siege of Montevideo, as Brazilian forces sought to capture the last Portuguese redoubt in the Cisplatina during the War of Independence of Brazil.

The battle was one of the few conventional naval battles between the two powers during the war. The Portuguese forces, a captured schooner and three armed transports, had endured the Brazilian blockade of the port but only sought to break it on 21 October.

Despite heavy fighting neither side lost a ship, and the Portuguese withdrew to the port, with the conflict ending a month later with the surrender of Montevideo.^[1]