The Três Paus redoubt (Portuguese: Reduto dos Três Paus) is a redoubt fortification situated on the peninsula of Monte Brasil, in the civil parish of Sé, in the municipality of Angra do Heroísmo, in the Portuguese archipelago of the Azores.

Bartolomeu Ferraz first presented his recommendations to John III of Portugal in 1543 for the fortification of the Azores, then an important waypoint in trans-Atlantic commerce between the Indies and America.

[1] On 5 March 1567, in his proposal to the Crown, Engineer Tommaso Benedetto elaborated a plan to protect the island's coastal defence, that included the construction of a fort on Monte Brasil.

[1] During the dynastic crisis (in 1580), the Azores supported the Portuguese cause of António, Prior of Crato and his claim to the throne, resulting in an insular rebellion that lasted for three years.

[1] On 13 October 1581, a letter from Frair Simão de Barros was sent to Queen Elizabeth for military assistance.