Svellnosbreahesten is a mountain in Lom Municipality in Innlandet county, Norway. The 2182 m tall mountain is located in the Jotunheimen mountains within Jotunheimen National Park. The mountain sits about 28 km southwest of the village of Fossbergom and about 42 km northeast of the village of Øvre Årdal. The mountain is surrounded by several other notable mountains including Galdhøpiggen, Keilhaus topp to the northeast; Veslpiggen and Storjuvtinden to the north; Skardstinden to the northwest; Store Tverråtinden, Bukkehøe, and Lindbergtinden to the southwest; and Midtre Tverråtinden and Store Styggehøe to the southeast.