Koli National Park is a national park in the municipalities of Joensuu, Lieksa and Kontiolahti in the North Karelia region of Finland. It covers 30 square kilometres (12 sq mi) in the forested hills on the western shore of lake Pielinen, and was established in 1991. Contrary to the other national parks in Finland, Koli National Park was originally governed by the Finnish Forest Research Institute Metla. It is now governed by the Metsähallitus like the other national parks.
The national park of Koli has been divided into three different zones according to central protection objectives. Attention is paid to a national landscape and geology in a zone which covers the highest tops of Koli. The culture zone is located quite near a village. In the culture zone the multiformity of the tradition landscapes is maintained by burn-beating, by grazing and by managing open fields by among others mowing.
The yard circles with their old buildings on the open field and on the pasturage graze the pearls of the burn-beaten area culture in the middle of the open man-made landscape lined by the koivikko, the kyyttö and sheep are. Especially the multiform flora of open fields needs annual maintenance mowing in order to be preserved. To the nature zone the forest nature of dangers is protected. The nature of Koli is well varying from the point of view of the terrain and thanks to it there is a large number of different biotopes even in a small area and thus the species a very multiform one. The laws of rocks are fairly rugged, the shady slopes in the covering of the old spruces or birches and from the field slopes of valleys shadily moist groves grow rank.