The Iezer Mountains (Romanian: Munții Iezer / Munții Iezer-Păpușa) are a mountain range in the Southern Carpathians in Romania.

It is part of the Făgăraș Mountains group.

Its highest elevation is 2,470 m (8,100 ft), at Roșu Peak.

The rivers Dâmbovița and Râul Târgului take their source in the Iezer Mountains.

The range lies completely within Argeș County.