Álvaro de Bazán, 1st Marquess of Santa Cruz de Mudela, GE, KOS (12 December 1526 – 9 February 1588), was a Spanish admiral.
According to Spanish sources, he was never defeated, a remarkable achievement in a fifty-year long career.
His personal galley, La Loba (The She-Wolf), thus called by her golden figurehead, was feared by Spanish enemies and regarded with hope amongst Spanish sailors and allies.