Fort São Jerónimo is a former Portuguese fortress located on the right bank of the Damanganga River, on the coast of the Gulf of Khambat, former parish of Damão Pequeno, in the city of Daman, India.

[1] The incentive to build a stronghold or bulwark in Damão Pequeno may be related to the invasion of the Mughal army in 1611, in retaliation for the imprisonment in Surat of a merchant ship coming from Jeddah.

Started in 1615, during the viceroyalty of Dom Jerónimo de Azevedo, the work was carried out by Júlio Simão, then chief engineer of the Portuguese State of India, although it may have been the responsibility of the rector of the Jesuit college of Damão, António Albertino, as the Jesuits were the administrators of the fortification works in Daman.

[6] The structure was conceived as a kind of autonomous hornwork of the fortress of Daman, with the three bastions facing north, northeast and east, thus pointing towards the land and not towards the city, with flanks where the wall is weak and narrow.

[2] The main door of the fortification, facing south, in addition to containing extensive information about the foundation of the structure, features two decorative motifs flanking the opening, consisting of two giants, each holding a millstone and a parchment.