Augusto Perez Garmendia (1899 in Donosti – 1936 in Pamplona), was a Spanish military man. He was Chief of the Spanish Republican Army General Staff in San Sebastián at the time of the coup d'état of 1936 that gave rise to the Spanish Civil War, although his official post was at Oviedo. After soliciting to return to its position in Asturias when knowing the blow, the Civil Governor of Guipuzcoa begged that he remain in the Basque Country then lacking sufficient professional soldiers loyal to the Second Spanish Republic.