Godmanchester is a town and civil parish in the Huntingdonshire district of Cambridgeshire, England. It is separated from Huntingdon, 1 mile (1.6 km) to the north, by the valley of the River Great Ouse. Being on the Roman road network, the town has a long history. It has a waterside location, surrounded by open countryside of high value for its biodiversity but it remains highly accessible, with a railway line to London, the A1 road and M11/A14 which run nearby.

Huntingdonshire is a local government district in Cambridgeshire, England, which was historically a county in its own right. It borders Peterborough to the north, Fenland to the north-east, East Cambridgeshire to the east, South Cambridgeshire to the south-east, Central Bedfordshire and Bedford to the south-west, and North Northamptonshire to the west.