Prince of Brazil (Portuguese: PrÃncipe do Brasil) was the title held by the heir-apparent to the Kingdom of Portugal, from 1645 to 1815. Tied with the title of Prince of Brazil was the title Duke of Braganza and the various subsidiary titles of the Dukedom of Braganza.
The title's name has its origins in the State of Brazil, a colony of the Portuguese Empire. The term "Principality of Brazil" is anachronistic, having never been used as the official title of Brazil in the period in question, in the same way that the "Principality of Beira" related to the nobiliarchic title Prince of Beira never existed. During this period, Brazil was officially designated as the State of Brazil.