Alfonso Pérez de Vivero y Menchaca
Count of Fuensaldaña
Engraved portrait of the Count of Fuensaldaña by Lucas Vorsterman (I), produced ca. 1640–1661
Born	1603 Valladolid
Died	21 November 1661 Cambrai
Occupation	commander and statesman

Alfonso Pérez de Vivero (Valladolid, 1603 – Cambrai, 21 November 1661), Count of Fuensaldaña, was a Spanish soldier, nobleman and officeholder.

In 1632, when in his late twenties, he went to Flanders with a commission as captain of a company in the Army of Flanders. In 1635 he became governor of the citadel of Cambrai, and in 1636 maestre de campo. He was general of artillery on the French front in 1640–1641, general of cavalry on the Dutch front in 1643, general of infantry on the French front 1644–1646, and governor of arms (second-in-command of the whole army) 1648–1656. He was Governor of Milan from 1656 to 1660. In 1660 he retired from public life, withdrawing to Cambrai, where he died.

• Fernando González de León, The Road to Rocroi: Class, Culture and Command in the Spanish Army of Flanders (History of Warfare 52; Brill, Leiden, 2009)

• Portrait engraved by Cornelius Galle the Younger.