Stainsby Mill is a 19th-century flour watermill in Doe Lea, Chesterfield, Derbyshire, England.

The mill, which has been restored to full working order, is a Grade II listed building[1] and is under the ownership of the National Trust.

Originally all the water for the mill came from the River Doe Lea which fed the Miller's Pond on the Hardwick estate.

[3] By the 1840s the mill had become dilapidated and William Cavendish, 6th Duke of Devonshire decided it needed rebuilding and re-equipping.

The mill was substantially rebuilt in dressed stone from the Hardwick Estate and fitted with modern machinery, including a 17 ft (5.2 m) diameter breast shot water wheel, between 1846 and 1850.