Sixt-Fer-à-Cheval (French pronunciation: [sikst fɛʁ a ʃ(ə)val]; Arpitan: Hi) is a commune in the Haute-Savoie department within the Auvergne-Rhône-Alpes region in southeastern France.

The name Sixt-Fer-à-Cheval comes from the shape of the natural amphitheatre ("Cirque du Fer à Cheval") which, from above, looks like a horseshoe.

Located in the Natural Reserve of Sixt, the Cirque du Fer à Cheval, classified a Grand Site de France is a destination for approximately 500,000 visitors each year.

Part of the Grand-Massif ski resort, Sixt is a destination for skiers and proponents of other forms of alpine activities (paragliding, via ferrata, mountaineering, ice-climbing, and rafting).

[citation needed] This 14 km "Piste des Cascades" all the way down to Sixt, 1,700 metres (5,600 ft) below, is a gentle blue run through meadows, iced waterfalls and forests, where it is possible to see chamois and alpine ibex.