Valserhône (French pronunciation: [valsəʁon] ⓘ; Arpitan: Vâlcerôno) is a commune in the Ain department in the Auvergne-Rhône-Alpes region in Eastern France.

It is the result of the merger, on 1 January 2019, of the communes of Bellegarde-sur-Valserine, Châtillon-en-Michaille and Lancrans.

This makes Valserhône the third-most populated commune of Ain, after Bourg-en-Bresse and Oyonnax.

The commune has a station, Bellegarde, which is located at the junction of three railway lines and has regular service to various destinations in France and Switzerland.

The average annual rainfall is 1,184.6 mm (46.64 in) with December as the wettest month.