Kalvola is a former municipality of Finland. Its seat was in Iittala. It was consolidated with Hämeenlinna on 2009-01-01.
It is located in the province of Southern Finland and is part of the Tavastia Proper region. The municipality had a population of 3,449 and covered an area of 338.81 km² of which 38.75 km² is water. The population density was 10.2 inhabitants per km².
Kalvola is best known for its Iittala glass factory.
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