The Rheinwaldhorn is the highest point in the Swiss canton of Ticino at 3402m. It lies on the border between the cantons of Graubünden and Ticino, in the Adula massif, part of the St. Gotthard massif of the Lepontine Alps in southern Switzerland.

The mountain is known under different names, Rheinwaldhorn, Adula or Piz Valrhein.[2] The group of the snowy peaks lying between the two principal branches of the Rhine were knonw in the Middle Ages by the names Mons Aquila or Mons Avium. From the Romansh form of the first comes the name Adula, which is used to designate the north-eastern portion of the Lepontine Alps.