| Maria of Portugal | |
| Succession: | Hereditary Princess of Parma |
| Reign: | 11 November 1565 - 7 September 1577 |
| Reign-Type: | Tenure |
| Spouse: | Alexander Farnese, Duke of Parma |
| Issue: | |
| Issue-Link: |
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| House: | Aviz (by birth) Farnese (by marriage) |
| Father: | Infante Duarte, Duke of Guimarães |
| Mother: | Isabel of Braganza |
| Birth Date: | 12 August 1538 |
| Birth Place: | Ribeira Palace, Lisbon, Kingdom of Portugal |
| Death Place: | Parma, Duchy of Parma |
Infanta Maria of Guimarães (12 August 1538 - 9 July 1577) was a Portuguese infanta, daughter of Infante Duarte, Duke of Guimarães (son of King Manuel I of Portugal), and Isabel of Braganza. She married Alessandro Farnese, Duke of Parma and Piacenza on 11 November 1565. She was Hereditary Princess of Parma by marriage.[1]
| Name | Birth | Death | Notes | |
|---|---|---|---|---|
| Margherita Farnese | 7 November 1567 | 13 April 1643 | married, 1581, Vincenzo I, Duke of Mantua; no issue | |
| Ranuccio Farnese | 28 March 1569 | 5 March 1622 | succeeded as Duke of Parma married, 1600, Margherita Aldobrandini; had issue | |
| Odoardo Farnese | 7 December 1573 | 21 February 1626 | became a Cardinal |