Pertunmaa () is a former municipality of Finland located in the South Savo region. The municipality was merged to the municipality of Mäntyharju on 1 January 2025.
The municipality had a population of 1,541 and covered an area of 454.20 km2 (175.37 sq mi) of which 79.7 km2 (30.8 sq mi) was water. Also, Itä-Häme (literally "East Tavastia") newspaper is also distributed in Pertunmaa.
According to a common legend in the locality, Pertunmaa is named after a man called Perttu, who once ruled the whole of Pertunmaa (literally the "land of Perttu") alone.
In the 1980s, blodpalt called Kisko, and Rieska breads baked from rye flour, cream and sour cream, which are baked with cabbage leaves, were named Pertunmaa's traditional dishes.
Villages
Pertunmaa's church village (Pertunmaan kirkonkylä) and Kuortti are the largest and most populous villages of the municipality.
Other smaller villages contain the following.
- Hartosenpää, Hölttä, Joutsjärvi, Karankamäki, Kirkonkylä, Koirakivi, Kuhajärvi, Kälkyttä, Lihavanpää, Mansikkamäki, Nipuli, Ruorasmäki, Ruuttila, Sydänmaa, Vastamäki
Notable people
- Jari Leppä, the Minister of Agriculture and Forestry
- Vesa Törnroos, a sports shooter
- Kari Uotila, a politician