| Prince Ranieri | |||||
|---|---|---|---|---|---|
| Duke of Castro | |||||
 Portrayed with a cavalry uniform of the Spanish Army and the Order of Alcántara, c. 1914 | |||||
| Head of the House of Bourbon-Two Sicilies (disputed) | |||||
| Tenure | 7 January 1960 – 13 January 1973 | ||||
| Predecessor | Prince Ferdinand Pius | ||||
| Successor | Prince Ferdinand | ||||
| Born | 3 December 1883 Cannes, France | ||||
| Died | 13 January 1973 (aged 89) Roquebrune-sur-Argens, France | ||||
| Burial | |||||
| Spouse |
Countess Maria Carolina Zamoyska
(m. 1923; died 1968) | ||||
| Issue | Princess Maria del Carmen Prince Ferdinand, Duke of Castro | ||||
| |||||
| House | Bourbon-Two Sicilies | ||||
| Father | Prince Alfonso, Count of Caserta | ||||
| Mother | Princess Maria Antonietta of Bourbon-Two Sicilies | ||||
| Religion | Roman Catholic | ||||
Prince Ranieri Maria Gaetano, Duke of Castro (3 December 1883 – 13 January 1973) was a claimant to the headship of the House of Bourbon-Two Sicilies.