| woreda | |
| Native Name: | ሲያደብርና ዋዩ |
| Type: | Woreda |
| Subdivision Type: | Zone |
| Subdivision Name: | Semien Shewa |
| Subdivision Type1: | Region |
| Subdivision Name1: | Amhara Region |
| Population As Of: | 2012 est. |
| Population Total: | 66,422 https://web.archive.org/web/20120805184429/http://www.geohive.com/cntry/ethiopia.aspx |
| Population Density Km2: | auto |
| Area Total Km2: | 452.35 |
| Area Footnotes: | [1] |
Siyadebrina Wayu (Amharic: ሲያደብርና ዋዩ) is one of the woredas in the Amhara Region of Ethiopia. Located in the Semien Shewa Zone, Siyadebrina Wayu is bordered on the south by the Oromia Region, on the west by Ensaro, on the north by Moretna Jiru, and on the east by Basona Werana. Towns in this woreda include Deneba. Siyadebrina Wayu was part of the former Siyadebrina Wayu Ensaro woreda.
Based on the 2007 national census conducted by the Central Statistical Agency of Ethiopia (CSA), this woreda has a total population of 61,046, of whom 31,322 are men and 29,724 women; 4,522 or 7.41% are urban inhabitants. The majority of the inhabitants practiced Ethiopian Orthodox Christianity, with 99.58% reporting that as their religion.[2]