HRH Infanta Doña Pilar de Borbón (Maria del Pilar Alfonsa Juana Victoria Luisa Ignacia de Todos los Santos de Borbón de Gomez-Acebo), Duchess of Badajoz, (born July 30, 1936) is the oldest daughter of Juan de Borbon, Count of Barcelona and Maria Mercedes Borbón y Orleans, and older sister of current reigning King Juan Carlos of Spain.

She married Don Luis Gomez-Acebo y de Estrada, Vizconde de la Torre (December 23 1934 - March 9, 1991) on May 6, 1967 at Lisbon, Portugal. They have five children:

• Simoneta Luisa Gomez-Acebo y de Borbón (born October 28, 1968). She married Jose Miguel Fernandez y Sastron in 1990 and they have two sons (Luis Juan and Pablo) and one daughter (Maria de las Mercedes).
• Juan Filiberto Nicolás Gomez-Acebo y de Borbón (born December 6, 1969), Vizconde de la Torre.
• Bruno Alejandro Gomez-Acebo y de Borbón (born June 15, 1971). Married to Bárbara Cano.
• Beltrán Luis Alfonso Gomez-Acebo y de Borbón (born May 20, 1973). Married model Laura Ponte on September 18, 2004.
• Fernando Umberto Gomez-Acebo y de Borbón (born September 30, 1974)

She's President of the International Equestrian Federation (FEI) since 1994, member of the International Olympic Committee since 1996 for Spain and Member of the Executive Board of the Spanish Olympic Committee.