The Fors de Bearn, or fueros of Béarn, are a series of legal texts (privileges, rulings, judicial sentences, decrees, formularies) compiled over centuries (mostly the eleventh to thirteenth) in the Viscounty of Béarn.
Together they formed the constitution of Béarn at the time of their first known complete version in the fifteenth century.
This was the seed of the future For de Oloron, which granted the city a commune.
Finally, in 1188, Gaston VI promulgated the For General, applicable throughout Béarn.
In the first half of the thirteenth century, the viscounts William Raymond and Gaston VII issued a series of fors for each of the Pyrenean valleys: In the sixteenth century, when Béarn was united with the Kingdom of Navarre, monarchs Henry II and Joanna III reorganised and improved the Fors.