Duke of Castro or Duchess of Castro may refer to:
- As reigning dukes, rulers of the Duchy of Castro of the House of Farnese (1537âÂÂ1649):
- Pier Luigi Farnese, 1st Duke of Castro from 1537 to 1545 (1503âÂÂ1547)
- Ottavio Farnese, 2nd Duke of Castro from 1537 to 1545 (1545âÂÂ1547)
- Orazio Farnese, 3rd Duke of Castro from 1547 to 1553 (1547âÂÂ1553)
- Ottavio Farnese, 4th Duke of Castro from 1553 to 1586 (1524âÂÂ1586)
- Alexander Farnese, 5th Duke of Castro from 1586 to 1592 (1545âÂÂ1592)
- Ranuccio I Farnese, 6th Duke of Castro from 1592 to 1622 (1569âÂÂ1622)
- Odoardo Farnese, 7th Duke of Castro from 1622 to 1646 (1612âÂÂ1646)
- Ranuccio II Farnese, 8th Duke of Castro from 1646 to 1649 (1630âÂÂ1694)
- As titular dukes, heads of the House of Bourbon-Two Sicilies (1861âÂÂpresent):
- Francis II, King of the Two Sicilies from 1859 to 1861, and Duke of Castro from 1861 to 1894 (1836âÂÂ1894)
- Prince Alfonso of Bourbon-Two Sicilies, Duke of Castro from 1894 to 1934 (1841âÂÂ1934)
- Prince Ferdinand Pius of Bourbon-Two Sicilies, Duke of Castro from 1934 to 1960 (1869âÂÂ1960)
- Prince Ranieri of Bourbon-Two Sicilies, Duke of Castro from 1960 to 1973 (1883âÂÂ1973)
- Prince Ferdinand Maria of Bourbon-Two Sicilies, Duke of Castro from 1973 to 2008 (1926âÂÂ2008)
- Prince Carlo of Bourbon-Two Sicilies, Duke of Castro from 2008 to present (born 1963)
See also