Chamechaude, Limestone mountain summit in Chartreuse Massif, Isère, France.

Chamechaude is a limestone summit in the Chartreuse Massif reaching 2,082 metres. Its upper part is bare pale grey and white rock with snow patches, above a horizontal band of steep, vertical cliffs in warm orange-brown and tan stone. The summit narrows to a rounded top, and the lower slopes are snow-covered with scattered dark trees.

Climbing routes on the east face were opened from the end of the Second World War, on the roughly 200-metre vertical wall above the scree slope. The western side, by contrast, is an easy hike from the Col de Porte (1,326 m). The Brèche Arnaud notches the east wall slightly south of the summit.

The name comes from "Chame chauve", from the Latin culmen (peak, rocky height), referring to a pasture and the summit above it; the altered form predates the 19th century. The older explanation via Latin calvus, "sunny alp", is considered unlikely. The summit marks the junction of Saint-Pierre-de-Chartreuse, Sarcenas and Le Sappey-en-Chartreuse.

The usual ascent starts at the Col de Porte (1,326 m) and climbs the western slope, where the route is easy. The east face is a vertical wall about 200 m high above a scree slope, crossed by the Brèche Arnaud just south of the summit. The GR9 and the Tour de Chartreuse GR pass through the Col de l'Émeindras to the east.

The eastern face has specific climbing sectors with vertical ascents spanning several hundred meters on solid limestone, making it a destination for experienced climbers. This rock formation is well known among sport climbers in the region for offering varied difficulty levels.