Belmont-Luthézieu (French pronunciation: [bɛlmɔ̃ lytezjø]) is a former commune in the Ain department in eastern France.

On 1 January 2019, it was merged into the new commune Valromey-sur-Séran.

[2] The commune is 18 km north of Belley.

There are several waterfalls, gorges and caves in a forested environment.

This Ain geographical article is a stub.