Dukedoms in Portugal List List

| Title | Date_of_creation | Surname | First_titular_ |
|---|---|---|---|
| Duke of Abrantes | December 9, 1753 | Lorena | Ana Maria Catarina Henriqueta de Lorena |
| Duke of Albuquerque | May 19, 1886 | Costa de Sousa de Macedo | João Afonso da Costa de Sousa de Macedo |
| Duke of Aveiro | b. 1535 | Lencastre , Mascarenhas da Silva e Lencastre | John of Lencastre, 1st Marquis of Torres Novas |
| Duke of Ávila and Bolama | May 14, 1878 | Ávila | António José de Ávila |
| Duke of Barcelos | August 5, 1562 | Bragança | John, 6th Duke of Braganza |
| Duke of Beja | 1453 | Portugal-Aviz , Bragança | Ferdinand, Duke of Viseu |
| Duke of Braganza | 1442 | Bragança | Afonso, Count of Barcelos |