Faverges-Seythenex () is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. It was created on 1 January 2016 when the communes Faverges and Seythenex were merged.
The ski resort of La Sambuy-Seythenex is within the commune.
Population data refer to the area corresponding with the commune as of January 2025.