Bretby is a village and civil parish in the south of Derbyshire, England, north of Swadlincote and east of Burton upon Trent, on the border between Derbyshire and Staffordshire. The population of the civil parish as of the 2011 census was 893. The name means "dwelling place of Britons". On the A511 road, there is a secondary settlement, Stanhope Bretby, which was the site of Bretby Colliery.