Prince of Beira (Portuguese: Príncipe da Beira, feminine: Princesa da Beira) is a title traditionally granted to the heir apparent to the throne of Portugal. The title's original use that it be granted on the eldest daughter of the reigning monarch of Portugal. Tied with the title of Prince of Beira, is Duke of Barcelos, as heir to the Duke of Braganza and Prince of Brazil (later Prince Royal of Portugal). The title's name has its origins in the Beira province in central Portugal.