Dionisio Aguado (April 8, 1784 — December 29, 1849) was a Spanish classical guitarist and composer. Born in Madrid, he studied with Miguel Garcia. In 1825, Aguado visited Paris, where he met and became friends with, and for a while lived with, Fernando Sor. Sor's duo "Les Deux Amis" ("The Two Friends") commemorated the friendship: one part is marked "Sor" and the other "Aguado." Aguado's major work Escuela de Guitarra was a guitar tutor published in 1825.