Gastón de Moncada, 2nd Marquis of Aitona
Gastón de Moncada y Gralla-Despla, 2nd Marquis of Aitona (1554–1626) was a member of Spanish nobility who was the Viceroy of Sardinia (1590–1595) and the Viceroy of Aragon (1604-1610).
He was one of the 17 children of the 2nd Count of Aitona Francisco de Moncada y Folch de Cardona, 1st Marquis of Aitona. His grandfather was Juan de Moncada y de Tolsá, 11th Baronet.