| Martha of Armagnac | |
|---|---|
 | |
| Duchess of Girona and Countess of Cervera | |
| Tenure | 24 June 1373 – 13 July 1378 |
| Born | after 18 February 1347 Armagnac |
| Died | July 13, 1378 Zaragoza |
| Burial | Convent of St. Francis |
| Spouse | John, Duke of Girona |
| Issue among others... | Joanna, Countess of Foix |
| House | House of Armagnac House of Barcelona |
| Father | John I, Count of Armagnac |
| Mother | Beatrice of Clermont |
Martha of Armagnac (after 18 February 1347 – 23 October 1378) was the youngest child of John I, Count of Armagnac, and his second wife Beatrice of Clermont. She was the first wife of John I of Aragon but never became Queen of Aragon because she was outlived by her father-in-law Peter IV of Aragon.