| Isabella of Portugal | |
|---|---|
_-_Portrait_of_Isabella_of_Portugal.jpg) Isabel of Portugal, by Rogier van der Weyden c. 1450s | |
| Duchess consort of Burgundy | |
| Tenure | 7 January 1430 – 15 July 1467 |
| Born | 21 February 1397 Évora, Portugal |
| Died | 17 December 1471 (aged 74) Aire-sur-la-Lys, Burgundian Netherlands |
| Spouse | |
| Issue | Charles the Bold |
| House | Aviz |
| Father | John I of Portugal |
| Mother | Philippa of Lancaster |
Isabella of Portugal (Portuguese: Isabel de Portugal; 21 February 1397 – 17 December 1471) was Duchess of Burgundy from 1430 to 1467 as the third wife of Duke Philip the Good. Their son was Charles the Bold, the last Valois Duke of Burgundy.
Born a Portuguese infanta of the House of Aviz, Isabella was the only surviving daughter of King John I of Portugal and his wife Philippa of Lancaster. She served as the regent of the Burgundian Low Countries during the absence of her spouse in 1432 and in 1441–1443. Isabella served as her husband's representative in negotiations with England regarding trade relations in 1439 and those with the rebellious cities of Holland in 1444.