Lomseggi is a mountain on the border of Skjåk Municipality and Lom Municipality in Innlandet county, Norway. The 2,068-metre (6,785 ft) tall mountain is located in the Breheimen mountains and inside the Breheimen National Park, about 9 kilometres (5.6 mi) southeast of the village of Bismo and about 10 kilometres (6.2 mi) southwest of the village of Lom. The mountain is surrounded by several other notable mountains including Storhøi to the south; Lendfjellet, Moldulhøi, and Sandgrovhøi to the southwest; Hestdalshøgdi and Tverrfjellet to the west.

• List of mountains of Norway