Sernancelhe (Portuguese pronunciation:[sɨɾnɐ̃ˈsɐʎ(ɨ)] or [sɨɾnɐ̃ˈseʎ(ɨ)]) is a municipality in the district Viseu, Portugal. The population in 2011 was 5,671, in an area of 228.61km².
The present mayor is Carlos Silva Santiago, elected by the Social Democratic Party. The municipal holiday is May 3.