The Scex Rouge (also spelled Sex Rouge; lit. "red rock"; 2,971 m) is a mountain of the Alps, overlooking Les Diablerets in the canton of Vaud. Along with the Oldenhorn to the east, it is one of the main peaks of the Diablerets, a huge ice-covered mountain near the western end of the Bernese Alps, straddling the border between the cantons of Vaud, Valais and Bern, and exceeding 3,000 metres above sea level.