Aisgill is the southernmost of the hamlets that form the parish of Mallerstang in the English county of Cumbria.

The highest waterfall on the River Eden, Hellgill Force, with a drop of about 9.75 metres (according to recent measurements) is just to the north, at grid reference SD779966.

It finally becomes the river Eden after merging with the Ais Gill beck, which flows down from Wild Boar Fell.

But the view at Aisgill is dominated by the great table-top bulk of Wild Boar Fell, to the south-west.

The Settle-Carlisle Railway reaches its highest point at "Aisgill Summit" 356 m (1,168 ft); and there is a small viaduct where the line crosses Ais Gill beck.