Gaston IV, Viscount of Béarn
| Gaston IV of Béarn | |
|---|---|
| Viscount of Béarn | |
| Reign | 1090 – 1131 |
| Predecessor | Centule V |
| Successor | Centule VI |
| Born | Unknown |
| Died | 1131 |
| Spouse | Talesa of Aragon |
| Issue | Centule VI of Béarn Guiscarda of Béarn |
| House | House of Gascony |
| Father | Centule V of Béarn |
| Mother | Gisela of Gascony |
Gaston IV (died 1131) was viscount of Béarn from 1090 to 1131. He was called le Croisé––the Crusader––because of his participation in the First Crusade as part of the army of Raymond of Saint-Gilles.