Ferdinand, Duke of Viseu
| Infante Ferdinand | |
|---|---|
| Duke of Viseu and Beja | |
Depiction of Infante Ferdinand in a 1678 portrait in the Convent of Beja | |
| Born | 17 November 1433 Almeirim |
| Died | 18 September 1470 (aged 36) Setúbal |
| Spouse | Beatrice of Portugal |
| Issue | |
| House | Aviz |
| Father | Edward, King of Portugal |
| Mother | Eleanor of Aragon |
Infante Ferdinand, Duke of Viseu and Beja (or Fernando, Portuguese pronunciation: [fɨɾˈnɐ̃du], 17 November 1433 – 18 September 1470) was the third son of Edward, King of Portugal and his wife Eleanor of Aragon.