Gretton is a village and civil parish in North Northamptonshire. It is in Rockingham Forest and overlooks the valley of the River Welland and the neighbouring county of Rutland. At the time of the 2001 census, the parish had a population of 1,240 people, increasing to 1,285 at the 2011 census. The villages name means 'Gravel farm/settlement' or perhaps, 'great farm/settlement'. It is near the town of Corby and the Rockingham Motor Speedway.