Crook Hill is a small hill in the Peak District National Park in the English county of Derbyshire, 5 kilometres (3.1 mi) northeast of Castleton. The hill is situated above the A57 Snake Pass road between Sheffield and Manchester as it passes Ladybower Reservoir. Crook Hill is regarded as an outlier of Kinder Scout although the two are separated by the long western arm of Ladybower Reservoir.