Veslebjørn is a mountain in Lom Municipality in Innlandet county, Norway. The 2150 m tall mountain is located in the Jotunheimen mountains within Jotunheimen National Park. The mountain sits about 40 km southwest of the village of Fossbergom and about 33 km northeast of the village of Øvre Årdal. The mountain lies in the Smørstabbtindene mountains and it is surrounded by several other notable mountains including Rundhøe to the northeast; Stetinden and Stehøi to the east; Gravdalstinden and Storebjørn to the south; Kalven to the west; and Sokse, Kniven, and Store Smørstabbtinden to the north.