Viiala is a former municipality of Finland. On 1 January 2007, it was consolidated with Toijala to form the town of Akaa.Viiala is located in the province of Western Finland and is part of the Pirkanmaa region. The municipality had a population of 5,329 (2003) and covered an area of 56.78 km2 of which 5.88 km² is water. The population density was 104.7 inhabitants per km².The municipality was unilingually Finnish.