Kälviä is a former municipality of Finland. Kälviä was consolidated with the city of Kokkola on 1 January 2009. It is located in the province of Western Finland and is part of the Central Ostrobothnia region. The former municipality had a population of 4,475 and covered an area of 682.36 km2 of which 14.68 km2 was water. The population density was 6.6 inhabitants per square kilometer. The former municipality was unilingually Finnish.