Joaquín Mendoza (Pamplona, Navarra, c. 1733–Gerona, 1809) was a Spanish field marshal and military governor of Gerona.
Mendoza studied at the Military Academy of Barcelona from 1752 to 1754 and was promoted to second lieutenant of the 1st Artillery Battalion in February 1756.
As the commanding officer of Artillery at Sant Ferran Castle, he was taken prisoner when the fortress, against his judgement, capitulated on 29 November 1794.
[1] During the War of the Oranges (1801), as the commander of the batteries that led to the capitulation of the fortress, Mendoza participated at the siege of Campo Maior.
[1] When General Álvarez de Castro took command of the fortress, Mendoza offered his services in the defence of the fortified town.