Adolfo Fernández Cavada (May 17, 1832 – December 18, 1871) was a soldier and diplomat, an officer in the Union Army during the American Civil War who served as captain in the Philadelphia 23rd Pennsylvania Infantry Regiment, a regiment of the Union Forces, with his brother, Colonel Federico Fernández Cavada. He served with distinction in the Army of the Potomac in the battles of Fredericksburg and Gettysburg and was a "special aide-de-camp" to General Andrew A. Humphreys. After the war, Fernández Cavada was appointed as consul in Cienfuegos, Cuba. He joined his brother, who had been in Trinidad, in the Cuban insurrection against Spanish rule and succeeded him as Commander-in-Chief of the Cinco Villas. He was killed in action.