Centule IV Gaston (died 1058), called the Old, was the seventh Viscount of Béarn from 1012 to his death.
Centule placed great importance on maintaining good relations with the Catholic Church.
In the year in which he assumed the powers of government, he founded the Abbey of Saint-Pé-de-Geyres [fr] near the border with Bigorre.
In 1033, Centule confirmed the possession of the county of Bordeaux by Duke Odo.
He gained the valleys of Aspe, Ossau, and Barétous [fr] all the way from the river Oloron to Navarrenx.