Mokraya Olkhovka (Russian: Мокрая Ольховка) is a rural locality (a selo) and the administrative center of Mokroolkhovskoye Rural Settlement, Kotovsky District, Volgograd Oblast, Russia.

[3] Mokraya Olkhovka is located in steppe, on Volga Upland, on the Mokraya Olkhovka River, 30 km northeast of Kotovo (the district's administrative centre) by road.

Kryachki is the nearest rural locality.

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