Nizhnechumanka (Russian: Нижнечуманка) is a rural locality (a selo) and the administrative center of Nizhnechumansky Selsoviet, Bayevsky District, Altai Krai, Russia.

Nizhnechumanka is located near the Kulunda river, 15 km southwest of Bayevo (the district's administrative centre) by road.

Rybnye Borki is the nearest rural locality.

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