Souther Fell is a Lake District fell of 522 m in Westmorland and Furness. All four of its nearest neighbours are higher, up to Blencathra – Hallsfell Top at 867.8 m.
It sits below Bannerdale Crags, only 1.9 km to the west and 162.1 m higher. Its key col leads to Blencathra – Hallsfell Top, not to its nearest higher summit, The Tongue. All four of its nearest neighbours lie to the west, so it stands at the eastern edge of its group. Its nearest higher summit, The Tongue (553 m, 1.2 km north-west), is a listed top not profiled here. The highest point is recorded as rock, not a cairn.