Ullscarf is a Lake District fell of 723 m in Cumberland. It stands 200.2 m above its nearest neighbour, Eagle Crag, 1.6 km to the west.
Its key col leads to High Raise, not to its nearest higher summit, Low White Stones. It shares its height of 723 m with Thunacar Knott. On the Wainwrights height ladder it sits between Clough Head (726 m) and Thunacar Knott (723 m). Its nearest higher summit, Low White Stones (731 m, 2.3 km south-west), is a listed top not profiled here. Its drop of 114.1 m makes it a Hewitt but is short of the 150 m a Marilyn needs. It falls on two OS 1:50,000 sheets, 89 and 90.