Kupchegen (Russian: Купчегень; Altay: Кӱпчеген, Küpçegen) is a rural locality (a selo) and the administrative centre of Kupchegenskoye Rural Settlement of Ongudaysky District, the Altai Republic, Russia.

Kupchegen is located in the mountain valley of the Ulegem Ridge at the mouth of the Kupchegen River, 38 km southeast of Onguday (the district's administrative centre) by road.

Khabarovka is the nearest rural locality.

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