Udelno-Duvaney (Russian: Удельно-Дуваней; Bashkir: Удельно-Дыуанай, Udelno-Dıwanay) is a rural locality (a selo) and the administrative centre of Udelno-Duvaneysky Selsoviet, Blagoveshchensky District, Bashkortostan, Russia.

Udelno-Duvaney is located on the right bank of the Belaya River, 19 km north of Blagoveshchensk (the district's administrative centre) by road.

Ilyinsky is the nearest rural locality.

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