Spanish monarchical titles or styles are listed in order of degrees of sovereignty, nobility, and honour.

As a grandson to deposed King Alfonso XIII, Juan Carlos was an Infante of Spain from birth.

Juan Carlos thus became titular Prince of Asturias,[1] the title traditionally held by the heir to the Spanish throne.

The king has been the recipient of numerous honorary doctorates and degrees,[54] including: Honorary doctorates Degrees Spanish Royal Academies Other *: Orders of the Kingdom of Spain with the grand mastership assumed by Francisco Franco as Spanish Head of State.

**: Dynastic orders with the domain remained by Infante Juan, Count of Barcelona, Head of the Spanish Royal House, until his formal renounce in 1977.