| Post: | Prince of Spain |
| Native Name: | Príncipe de España |
| Flag: | Estandarte del infante Juan Carlos de Borbón como Príncipe de España.svg |
| Flagsize: | 105px |
| Flagcaption: | Standard |
| Insignia: | Coat of Arms of Juan Carlos of Spain as Prince.svg |
| Insigniasize: | 105px |
| Insigniacaption: | Coat of arms |
| Style: | His Royal Highness |
| Residence: | Palace of Zarzuela |
| Appointer: | Francisco Franco |
| Termlength: | No fixed term |
| Precursor: | Prince of Asturias |
| Formation: | 22 July 1969 |
| First: | Juan Carlos de Borbón |
| Last: | Juan Carlos de Borbón |
| Abolished: | 22 November 1975 |
| Succession: | Prince of Asturias |
Prince of Spain (Spanish; Castilian: Príncipe de España) was the title created by law on 22 July 1969 for Prince Juan Carlos de Borbón, the designated successor of Generalísimo Francisco Franco.[1] Juan Carlos held the title until 22 November 1975, when he became King of Spain following the death of Franco. The only person to hold this title was Juan Carlos; the title given to the heir-apparent or heir-presumptive to the Spanish throne has since been Prince of Asturias or Princess of Asturias.
The title was given the associated style of His Royal Highness and the military honours of the Brigadier General of the Army.[2] The design of the coat of arms and the royal standard was regulated by decree on 22 April 1971 for the personal use of the Prince of Spain, not to be confused with an earlier hereditary confirmation by Joseph Bonaparte on his children and grandchildren.[3]