The Old Man of Coniston is a fell in the English Lake District. It is 803m high, and lies to the west of the village of Coniston and the lake of the same name, Coniston Water. The fell is sometimes known by the alternate name of Coniston Old Man, or simply The Old Man. Before the 1974 revision of county boundaries in England the Old Man was the highest fell in Lancashire. The extensive view from the summit includes much of the southern Lake District, as well as Morecambe Bay and the Lancashire coast.

The area between Coniston and the Old Man is much scarred by slate quarries and mines. The fell is normally climbed from Coniston village via Church Beck and the mines. Alternative routes include the south ridge, which ascends the mountain from the Walna Scar Road, a track that leaves Coniston from the southwest.

The Old Man of Coniston is linked by a ridge to Brim Fell .

There is also a beer brewed by the Coniston Brewery that is known as Old Man.