Sergeyevka (Russian: Сергеевка) is a rural locality (a selo) and the administrative center of Sergeyevsky Selsoviet of Blagoveshchensky District, Amur Oblast, Russia.

Sergeyevka is located on the left bank of the Amur River, 68 km north of Blagoveshchensk (the district's administrative centre) by road.

Bibikovo is the nearest rural locality.

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