Ñuñu Qullu (Aymara ñuñu breast, qullu mountain, "breast mountain", also spelled Nunu Kkollu) is a mountain in the Andes of Bolivia. It is situated in the Oruro Department, Pantaleón Dalence Province, Huanuni Municipality. Ñuñu Qullu lies north-west of the mountain Ch'iyara Ch'ankha and near the mountain Janq'u Qalani, south-west of it. (unnamed, near Chacara)

The river Lamama Mayu (Quechua for "stepmother river") originates at the feet of the mountains Ñuñu Qullu and Janq'u Qalani. It flows to the south-west where it meets Huanuni River.

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