Udelno-Duvaney (; , Udelno-Dñwanay) is a rural locality (a selo) and the administrative centre of Udelno-Duvaneysky Selsoviet, Blagoveshchensky District, Bashkortostan, Russia. The population was 1,079 as of 2010. There are 27 streets.
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.