Ust-Yermilikha (Russian: Усть-Ермилиха) is a rural locality (a selo) in Kabanovsky Selsoviet, Ust-Kalmansky District, Altai Krai, Russia.

Ust-Yermilikha is located 41 km southwest of Ust-Kalmanka (the district's administrative centre) by road.

Buranovo is the nearest rural locality.

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