Nizhny Olshan (Russian: Нижний Ольшан) is a rural locality (a selo) and the administrative center of Olshanskoye Rural Settlement, Ostrogozhsky District, Voronezh Oblast, Russia.

[3] Nizhny Olshan is located 23 km southwest of Ostrogozhsk (the district's administrative centre) by road.

Veretye is the nearest rural locality.

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