Infanta Pilar of Spain, Duchess of Badajoz, Dowager Viscountess de la Torre (María del Pilar Alfonsa Juana Victoria Luisa Ignacia y Todos los Santos de Borbón y Borbón-Dos Sicilias ) (born 30 July 1936, in Cannes) is the elder daughter of Infante Juan, Count of Barcelona and Princess María Mercedes of Bourbon-Two Sicilies, and older sister of King Juan Carlos I. She has also a younger sister, Infanta Margarita of Spain.
Infanta Pilar spent her early years at the royal family’s home in exile at Estoril in Portugal.

She was a bridesmaid at the 1962 wedding of her brother Prince Juan Carlos of Spain and Princess Sophia of Greece and Denmark in Athens.
She married Don Luis Gómez-Acebo y Duque de Estrada, Viscount de la Torre, Grandee of Spain (Madrid, 23 December 1934 – Madrid, 9 March 1991) on 5 May 1967 in Lisbon, Portugal.
Pilar de Borbón has been supporting international equestrian sport. She was President of the International Equestrian Federation from 1994 to 2006, succeeded by HRH Princess Haya bint al Hussein.{{FEI Presidents}} She wrote the foreword of the official Spanish translation of the national instruction handbook of the German National Equestrian Federation, Técnicas Avanzadas de Equitación – Manual Oficial de Instrucción de la Federación Ecuestre Alemana. From 1996 to 2006 she was a member of the International Olympic Committee for Spain, when she became an honorary member, and Member of the Executive Board of the Spanish Olympic Committee.

From 2007 to 2009 she was President of Europa Nostra, the pan-European federation for cultural heritage