The Avers Rhine (Romansh: Ragn da Ferrera, German: Averser Rhein) is a tributary of the Hinterrhein/Rein Posteriur in the Swiss canton of Graubünden.

The Jufer Rhine rises in, and is named after, Juf, the highest permanent settlement in Europe, near the border with Albula district.

From this confluence, the Avers Rhine descends through a deep gorge, spanned by the 80-metre (260 ft) high Lezi Bridge.

The Lago di Lei reservoir is also on Italian soil, except for the dam which creates it, which was erected on Swiss territory.

Below Ausserferrera (Romansh: Farera), the glacial valley is flanked by steep rocky slopes.