Forollhogna National Park is a national park in the counties of Sør-Trøndelag and Hedmark, Norway. Forollhogna park includes extensive plant life and is an important range for wild reindeer. The park lies in the municipalities of Kvikne, Tynset, Tolga, and Os in Hedmark and Holtålen, Midtre Gauldal, and Rennebu in Sør-Trøndelag.
The scenery of Forollhogna consists of large alpine areas, with gentle slopes rising from the valleys below—an area often referred to as "the gentle mountains". Here are thriving villages and a lush cultural landscape formed by the region's farming traditions. For centuries the mountain farms have been in use during the summer, and many still are. This is the setting of Forollhogna National Park, Norway's 19th park to be so designated.