The Portjengrat is a mountain of the Pennine Alps, located on the border between Switzerland and Italy. It lies south of the Weissmies and the Zwischbergen Pass, where the international border diverges away from the main Alpine watershed. The summit of the Portjengrat has an elevation of 3,654 metres above sea level and is the tripoint between the valleys of Saas, Divedro and Antrona. It is the culminating point of the Antrona valley.