Princess Royal of Portugal
This is a list of Princesses Royal of Portugal is, since 1815, both by marriage and birth. The title was preceded by the titles Princess of Brazil and Princess of Portugal.
The title was created in 1815 when John VI elevated colonial Brazil to the status of kingdom inside the United Kingdom of Portugal, Brazil and the Algarves. The heir became the Princess Royal of the United Kingdom of Portugal, Brazil and the Algarves. When Brazil declared its independence, the title was changed to the current state.
The holders of the title were styled Royal Highness and were also Duchesses of Braganza, Duchesses of Guimarães, Duchesses of Barcelos, Marchioness of Vila Viçosa, Countess of Arraiolos, Countess of Ourém, Countess of Barcelos, Countess of Faria, Countess of Neiva and Countess of Guimarães.
Princess Royal of Portugal
By birth
This is a list of Princess Royal of Portugal who held the title by their own rights:| Picture | Name | Heiress of | Birth | Became heiress to the throne | Ceased to be Princess Royal of Portugal | Death |
| Princess Januária | Maria II | 11 March 1822 | 2 May 1826 sister's accession as Queen regnant | 23 June 1828 sister's deposition and uncle's accession as King | 13 March 1901 | |
| Princess Maria Teresa | Miguel I | 29 April 1793 | 23 June 1828 brother's accession as King | 26 May 1834 brother's deposition and niece's accession and restoration as Queen regnant | 17 January 1874 | |
| Princess Januária | Maria II | 11 March 1822 | 26 May 1834 sister's restoration as Queen regnant | 16 December 1837 nephew's birth | 13 March 1901 |