Piz Lunghin (2,780 m) is a mountain in the Swiss canton of Graubünden, located in the Albula range, overlooking the Maloja Pass.

It is considered as the "roof of Europe" as the peak is nearby the triple watershed of the Lunghin pass.

Piz Lunghin lies at the upper end of the Engadine (east) and the Bregaglia (west) valleys.

The notable triple watershed is in fact located 600 metres from the summit itself, at the Lunghin Pass, at 2645 m (46°24′48.70″N 9°39′49.20″E / 46.4135278°N 9.6636667°E / 46.4135278; 9.6636667).

The summit can be reached easily from the north flank via a trail starting from the Lunghin Pass.