Vesilahti (Swedish: Vesilahti, also Vesilax) is a municipality in Finland, located in the Pirkanmaa region. It lies to the southwest of the regional capital, Tampere. The population of Vesilahti is approximately 4,000, while the metropolitan area has a population of approximately 421,000. It is the 181st most populous municipality in Finland.
Vesilahti has an area of 353.94 square kilometres (136.66 sq mi) of which 52.99 km2 (20.46 sq mi)
is water. The population density is 14.91 inhabitants per square kilometre (38.6/sq mi).
The municipality is unilingually Finnish. The name of municipality literally means "water bay".
The Vesilahti municipality headlined the case of "pink house", which is owned one of local inhabitants, Katri Hakola. The municipality didn't agree with her color choice and threatened the homeowner with a 5,000 € penalty if the color of the house didn't change. Later, the municipality tended to accept only a slight change in color and abolished the penalty payment. The incident sparked emotions on social media and the indignities accused the municipality of "bureaucratic teasing".