Don Carlos of Spain
Don Carlos of Spain or Infante Carlos of Spain may refer to:
- Charles V, Holy Roman Emperor (1500 – 1558), also known as Carlos I of Spain
- Don Carlos, Prince of Asturias (1545 – 1568), eldest son of Philip II of Spain
- Charles of Austria (1607-1632), aka Carlos, Infante of Spain, second surviving son of Philip III of Spain
- Baltasar Carlos, Prince of Asturias (1629-1646), eldest son of Philip IV of Spain
- Charles II of Spain (1661 – 1700), last Habsburg King of Spain
- Infante Carlos, Count of Molina (1788 – 1855), pretender as Carlos V (the first claimant king of Spanish Carlism) and second surviving son of Charles IV of Spain
- Carlos, Count of Montemolin (1818 – 1861), Carlist pretender as Carlos VI
- Carlos, Duke of Madrid (1848 - 1909), Carlist pretender as Carlos VII
- Alfonso Carlos, Duke of San Jaime (1849-1936), Carlist pretender as Alfonso Carlos I
- Archduke Karl Pius, Prince of Tuscany (1909 - 1953), leader of breakaway Carlist movement between 1943 and 1953 and a disputed pretender as Carlos VIII
- Carlos Hugo, Duke of Parma (1930 – 2010), former Carlist Prince of Asturias and pretender to the throne of Spain under the name Carlos VIII