Don Carlos of Spain
Don Carlos of Spain or Infante Carlos of Spain may refer to:
- Charles V, Holy Roman Emperor, also known as Carlos I of Spain, maternal grandson of the Catholic Monarchs King Ferdinand II of Aragon and Queen Isabella of Castile.
- Carlos, Prince of Asturias, eldest son of Philip II of Spain and therefore grandson of the above-mentioned Charles V, Holy Roman Emperor
- Don Carlos, Infante of Spain, second surviving son of Philip III of Spain
- Balthasar Charles, Prince of Asturias, eldest son of Philip IV of Spain
- Charles II of Spain, last Habsburg King of Spain as Carlos II
- Charles III of Spain, King of Spain from 1759 to 1788, formerly Duke of Parma and Piacenza and King of Naples and Sicily, third surviving son of Philip V of Spain
- Infante [Carlos María Isidro of Spain], pretender as Carlos V and second surviving son of Charles IV of Spain
- Infante Carlos, Count of Montemolín, Carlist pretender as Carlos VI
- Infante Carlos, Duke of Madrid, Carlist pretender as Carlos VII
- Infante Alfonso Carlos, Duke of San Jaime, Carlist pretender as Alfonso Carlos I
- Archduke Karl Pius of Austria, Prince of Tuscany, leader of breakaway Carlist movement between 1943 and 1953 and a disputed pretender as Carlos VIII
- Carlos Hugo, Duke of Parma, former Carlist Prince of Asturias and pretender to the throne of Spain under the name Carlos VIII
- Prince Carlos, Duke of Parma, former Carlist Prince of Asturias and pretender to the throne of Spain under the name Carlos Javier I