Ill Bell is a fell in the English Lake District, in the county of Cumbria, standing on the narrow ridge between the valleys of Kentmere and Troutbeck.

To the north is Froswick, a strikingly similar lesser copy, while the adjoining fell to the south is Yoke.

The western side is steep and relatively smooth, falling not direct to the Troutbeck valley but to its main tributary, Hagg Gill.

Direct ascents are also possible from the valley of Hagg Gill via the northernmost quarry, or striking up over Lead Howes from the reservoir in Kentmere.

The top of Ill Bell is small, peaked, and unusually stony for the Far Eastern Fells.