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.
He gained the valleys of Aspe, Ossau, and Barétous [fr] all the way from the river Oloron to Navarrenx.
His eldest son Gaston III was associated with the vicecomital throne, but died in or before 1045.