Lost Lad is a hill, 518 metres (1,699 ft) high on the Derwent Edge in the Peak District in the county of Derbyshire in England. It is a subpeak of Back Tor 538 metres (1,765 ft). Lost Lad is a bare, conical moorland summit and subpeak of the nearby Back Tor which rises about 600 metres to the southeast. The top of Lost Lad is marked by a cairn and toposcope and there are good views over the surrounding northern Peak District.