Mariano Moreno (1778–1811) was a lawyer, journalist and politician who played a decisive role in the May Revolution that led to the declaration of independence of Argentina from Spain. Moreno was a secretary in the First Junta that replaced the viceroy of Spain. He suppressed the uprising of Santiago de Liniers in Córdoba (whom he had executed later), and organized the liberating expedition to Alto Perú. He was then removed from office by Cornelio Saavedra.