Bellechasse Regional County Municipality (French pronunciation: [bɛlʃas]) is a regional county municipality in the Chaudière-Appalaches region of Quebec.

[2] Saint-Lazare was chosen as the county seat because of its central location.

Other municipalities, such as Saint-Anselme, Sainte-Claire, and Saint-Damien had wanted to be the county seat because of their larger population.

[citation needed] The region belongs to the Lévis—Bellechasse federal electoral district.

(Statistics Canada, 2016)[3] Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[5]