Alfonso, Duke of Anjou, Duke of Cádiz, Grandee of Spain (Alfonso Jaime Marcelino Manuel Víctor María de Borbón-Segovia y Dampierre, French citizen as Alphonse de Bourbon) (20 April 1936 – 30 January 1989) was a grandson of ex-King Alfonso XIII of Spain, a potential heir to the throne in the event of restoration of the Spanish monarchy, and a Legitimist claimant to the defunct throne of France as Alphonse II.

Alfonso was born in the Clinica Santa Anna in Rome, the elder son of Infante Jaime, Duke of Segovia, King Alfonso's second of four sons. His mother was Jaime's first wife, Donna Emanuela de Dampierre, daughter of the Franco-Italian Duke de San Lorenzo. The Segovias lived in Rome where Jaime's father had maintained a royal court-in-exile since the royal family fled Spain following the 1931 election of republicans and socialists in Spain's major cities. Alfonso was baptised at the Palazzo Ruspoli on the Via del Corso in Rome, home of his maternal grandmother, Donna Vittoria Ruspoli dei principi di Poggio Suasa, by Cardinal Eugenio Pacelli (later Pope Pius XII).

In 1941 Alfonso and his parents followed his English-born grandmother, Queen Victoria Eugenie to Lausanne in Switzerland. They lived first at the Hotel Royal, before Alfonso and his younger brother Gonzalo were sent to the Collège Saint-Jean (later Villa St. Jean International School) in Fribourg. On 8 December 1946 Alfonso made his first communion with his brother, Gonzalo; on the same day he was confirmed by Cardinal Pedro Segura y Sáenz, Archbishop of Seville.

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