The Viana do Castelo District is a district located in the northwest of Portugal, bordered on the north by Spain (Galicia) and on the south by Braga District. It has an area of 2,255 km2 and a population of 252,011 (2006), for a density of 111.8 inhabitants/km2. The district capital is the city of Viana do Castelo.

Municipalities

The district is composed of ten municipalities:

List of Parliamentary Representatives

Summary of votes and seats won 1976-2022

!rowspan=2|Parties!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S !colspan=2 | 1976 !colspan=2 | 1979 !colspan=2 | 1980 !colspan=2 | 1983 !colspan=2 | 1985 !colspan=2 | 1987 !colspan=2 | 1991 !colspan=2 | 1995 !colspan=2 | 1999 !colspan=2 | 2002 !colspan=2 | 2005 !colspan=2 | 2009 !colspan=2 | 2011 !colspan=2 | 2015 !colspan=2 | 2019 !colspan=2 | 2022 ! Total seats || colspan=2|7 || colspan=30|6 ! colspan=33|Source: Comissão Nacional de Eleições