Skarddalseggi or Skardalseggje is a mountain in Lom Municipality in Innlandet county, Norway. The 2161 m tall mountain is located in the Jotunheimen mountains within Jotunheimen National Park. The mountain sits about 40 km south of the village of Fossbergom and about 32 km northeast of the village of Øvre Årdal. The mountain is surrounded by several other notable mountains including Storådalshøi to the east; Store Rauddalseggi to the south; Skarddalstinden to the west; Austre Høgvagltinden and Høgvagltindene to the northwest; Kyrkja, Kyrkjeoksli, Langvasshøi, and Visbretinden to the north; and Urdadalstindene and Semeltinden to the northeast.