Microregion of Campanha Ocidental

The Campanha Ocidental micro-region (Microrregião de Campanha Ocidental, meaning the western fields in Portuguese) is a microregion in the western part of the state of Rio Grande do Sul, Brazil. The area is 31,125.429 km2 making it the largest micro-region in the state nearly covering one-tenth of the entire state, much of the central and eastern portions remain underpopulated.

Municipalities
The microregion consists of the following municipalities:
 * Alegrete
 * Barra do Quaraí
 * Garruchos
 * Itaqui
 * Maçambara
 * Manoel Viana
 * Quaraí
 * São Borja
 * São Francisco de Assis
 * Uruguaiana