Don Giovanni Battista dei Principi del Drago, Marchese di Riofreddo, known in the United States as the Prince del Drago and Prince Don Giovanni del Drago, was a member of the princely Del Drago family of Rome, though not a prince in his own right. He was the fourth son of Don Filippo Massimiliano del Drago, Prince of Mazzano and Antuni and thus the second cousin of Cardinal Giovanni Battista Casali del Drago. On his mother's side, he was a grandson of Queen Maria Christina of Spain and her second husband, Agustín Fernando Muñoz.