Castro Daire (European Portuguese pronunciation: [ˈkaʃtɾu ˈðajɾɨ] ⓘ) is a municipality in Viseu District in Portugal.

The population in 2011 was 15,339,[1] in an area of 379.04 km2.

[2] The present mayor is Paulo Almeida , elected by a coalition CDS-PP, PSD.

The municipal holiday is June 29 (St Peter's Day).

Administratively, the municipality is divided into 12 civil parishes (freguesias):[4] This Viseu location article is a stub.