Ilvetjørnhøi is a mountain in Lom Municipality in Innlandet county, Norway. The 1873 m tall mountain is located in the Jotunheimen mountains about 11 km southeast of the village of Fossbergom and about 20 km southwest of the village of Vågåmo. The mountain is surrounded by several other notable mountains including Veslekjølen to the west; Skarvhøi to the north; Gråvåhø to the east; Grjothovden, Liaberget, and Saukampen to the southeast; and Kvitingskjølen to the south.