Store Trollhøin or Nørdre Trollsteinhøe is a mountain in Lom Municipality in Innlandet county, Norway. The 2201 m tall mountain is located in the Jotunheimen mountains within Jotunheimen National Park. The mountain sits about 16 km south of the village of Fossbergom and about 32 km southwest of the village of Vågåmo. The mountain is surrounded by several other notable mountains including Finnshalspiggen to the north; Smådalshøe to the east; Grotbreahesten, Trollsteineggi, and Glittertinden to the south; Trollsteinrundhøe, Svartholshøe, and Gråhøe to the southeast; and Lauvhøe to the northwest.