Viana do Alentejo () is a municipality in the District of ÃÂvora in Portugal. The population in 2011 was 5,743, in an area of 393.67 km<sup>2</sup>.
The present Mayor is Bernardino Bengalinha Pinto, elected by the Socialist Party. The municipal holiday is January 13.
Viana do Alentejo has a Mediterranean climate (Köppen: Csa) with mild, rainy winters and hot to very hot, dry summers.
Administratively, the municipality is divided into 3 civil parishes (freguesias):
Notable people from Viana do Alentejo include:
Viana do Alentejo is twinned with: