Agenais
（重定向自Agenois）
Agenais, or Agenois, was an ancient region that became a county (Old French: conté or cunté) of France, south of Périgord.
In ancient Gaul the region was the country of the Nitiobroges with Aginnum for their capital, which in the fourth century was the Civitas Agennensium, which was a part of Aquitania Secunda and which formed the diocese of Agen. Having in general shared the fortunes of Aquitaine during the Merovingian and Carolingian periods, from 833 to 848, all the land seems to have been ravaged by the Vikings. Agenais from about 886 became an hereditary county in the part of the country now called Gascony (Vasconia). The first count of Agenais (comte d'Agen) was William I of Périgord (d. 920), son of Wulgrin I of Angoulême.