Isabella of Navarre, Countess of Armagnac
| Isabella of Navarre | |
|---|---|
| Countess of Armagnac | |
| Born | 1395 Kingdom of Navarre |
| Died | 31 August 1450 |
| Spouse | John IV of Armagnac |
| Issue | Marie, Duchess of Alençon John V of Armagnac Eleanor, Princess d'Orange, Lady of Arlay and Arguel Charles, Viscount of Fézensaguet Isabella, Lady of the Four-Valleys |
| House | Évreux |
| Father | Charles III of Navarre |
| Mother | Eleanor of Castile |
Isabella of Navarre (1395 – 31 August 1450) was the younger surviving daughter of Charles III of Navarre and his wife Eleanor of Castile. She was a member of the House of Évreux.