Bugey

Belley (; Arpitan: Bèlê) is a subprefecture of the Ain department in the Auvergne-Rhône-Alpes region, France. It is the capital of the historical region of Bugey, although not its largest city, which is Oyonnax, to the north.

Ambérieu-en-Bugey (; ) is a commune in the Ain department, Auvergne-Rhône-Alpes region, France. With 14,288 inhabitants (2020), it is one of the largest towns of the historical region of Bugey.

Oyonnax () is the second most populated commune in the Ain department in the Auvergne-Rhône-Alpes region in eastern France.

thumb|Lake Nantua dominates the town

Bellegarde-sur-Valserine (, literally Bellegarde on Valserine; ) is a former commune in the Ain department in the Auvergne-Rhône-Alpes region in Eastern France. On 1 January 2019, it was merged into the new commune of Valserhône.

Lagnieu (; ) is a commune in the Ain department in eastern France.

Lhuis () is a commune in the Ain department in eastern France in the Bugey region at the southern end of the Jura mountains, between Lyon and Aix-les-Bains, about from each.

The Bugey (, ; Arpitan: Bugê) is a historical region in the department of Ain, eastern France, located between Lyon and Geneva. It is located in a loop of the Rhône River in the southeast of the department. It includes the foothills of the Jura mountains, and the highest point is the Grand Colombier. Bugey is divided into two sub-regions: Haut Bugey and Bas Bugey. The inhabitants of Bugey are known as Bugistes or alternatively as Bugeysiens.