Antonio Cachia (1739–1813) was a Maltese architect, civil and military engineer and archaeologist who was active in the late 18th and early 19th century.
He was the son of the architect Gio Domenico Cachia, who was possibly the same person as Domenico Cachia, the capomastro who supervised the construction of Auberge de Castille.
[1] He was a cousin of Michele Cachia, another architect and military engineer.
In 1787, he received the title of Knight Commander of the Order of the Golden Spur by Pope Pius VI.
Cachia eventually became chief Superintendent of the Civil dockyard.