Outerside is a Lake District fell of 568 m in Cumberland. It sits below Scar Crags, only 0.8 km to the south and 104.2 m higher.
Its key col leads to Grasmoor, not to its nearest higher summit, Scar Crags. The key col is close by, only 0.3 km to the south-west at 494 m. The highest point is recorded as outcrop, not a cairn. It falls on two OS 1:50,000 sheets, 89 and 90.