Ruovesi is a municipality in the Pirkanmaa region of Finland. It is located in the western part of the region, and its administrative centre is the village of Ruovesi. The municipality covers an area of 950.16 square kilometres, of which 173.97 square kilometres is water.
Ruovesi has a population of 3,995, giving it a population density of 5.14 inhabitants per square kilometre. The municipality is sparsely populated and includes extensive lake and forest areas within its boundaries.