Beaujeu (Arpitan: Biôjor) is a commune of the Rhône department in eastern France.

However it was overtaken in the 14th century by Villefranche-sur-Saône, which remains the main commercial centre of the region.

The barony was acquired in the 9th century by Guillaume, Comte du Lyonnais and Count of Forez; on his death, his son Bérard became the first Lord of Beaujeu.

Lords: After the death of Edouard II, the barony passed to his uncle Louis II, Duke of Bourbon and was used as a title first by members of the Bourbon family and then by the House of Orléans.

In 1522, Francis I of France confiscated the title and gave it to his mother Louise of Savoy, but it reverted to the French crown on her death in 1531.