Infanta Margarita of Spain, Duchess of Soria, 2nd Duchess of Hernani, Grandee of Spain ("Margarita María de la Victoria Esperanza Jacoba Felicidad Perpetua de Todos los Santos de Borbón y Borbón"; born 6 March 1939) is a member of the Spanish royal family. She is the younger sister of King Juan Carlos I and aunt of current King Felipe VI of Spain. Her parents were Infante Juan, Count of Barcelona and Princess María Mercedes of Bourbon-Two Sicilies. She also had other siblings, Infanta Pilar and Infante Alfonso.