Kalvola is a municipality of Finland.

It is located in the province of Southern Finland and is part of the Tavastia Proper region. The municipality has a population of 3,449 (2003) and covers an area of 338.81 km² of which 38.75 km² is water. The population density is 10.2 inhabitants per km². Best known for its Iittala glass factory.

The municipality is unilingually Finnish.