The River Erewash is a river in England, a tributary of the River Trent that flows roughly southwards through Derbyshire, close to its eastern border with Nottinghamshire.

Sandiacre is a village and civil parish in the borough of Erewash in Derbyshire, in the East Midlands region of England adjoining the border with Nottinghamshire. The population of the parish was 8,889 at the 2011 Census.