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 total area is 535 km (207 sq mi). Its highest elevation is 2,470 m (8,100 ft), at Roșu Peak.

The Iezer Mountains are located between the Făgăraș Mountains to the northwest and the Piatra Craiului Mountains to the east. The rivers Dâmbovița and Râul Târgului take their source in the Iezer Mountains. The range lies completely within Argeș County.

The highest peaks are:

• Roșu 2,470 m
• Iezerul Mare 2,462 m
• Păpușa 2,391 m

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  Iezer Păpușa - Papau mountain
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  Lake Iezer and the nearby shelter
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  The main ridge
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  The main ridge of Iezer Păpușa
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  Iezer Păpușa
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  Iezer – Păpuşa, 3D