Iitti is a municipality of Finland.
It is located in the province of Southern Finland and is part of the Kymenlaakso region. The municipality has a population of 7,321 (2003) and covers an area of 685.08 km2 of which 97.10 km2 is water. The population density is 10.7 inhabitants per km2.
In 1990, the center of Iitti, which surrounds the old parish church, was voted the most attractive kirkonkylä ("church village") in Finland.
The municipality is unilingually Finnish.
Alfred