Prince Royal of Portugal (Portuguese: Príncipe Real de Portugal), officially Prince Royal of Portugal and the Algarves (Príncipe Real de Portugal e dos Algarves), was the title held by the heir-apparent or presumptive to the Kingdom of Portugal, from 1825 to 1910. From 1815 to 1825 the title was Prince Royal of the United Kingdom of Portugal, Brazil and the Algarves.
The title was created in 1815, as Prince Royal of Portugal, Brazil, and the Algarves (Príncipe Real de Portugal, Brasil, e os Algarves), when John VI of Portugal, at the time Prince-Regent for Maria I, elevated colonial Brazil to the rank of a Kingdom, creating the United Kingdom of Portugal, Brazil and the Algarves.
When Portugal recognized the independence of Brazil, in 1825, the title of the Portuguese heir apparent was changed to Prince Royal of Portugal and the Algarves.
With the deposition of the Portuguese monarchy, in 1910, and King Manuel II's death in 1932, the title became abeyant.