Cambridgeshire also known, archaically, as the County of Cambridge; abbreviated Cambs.) is a county in England, bordering Lincolnshire to the north, Norfolk to the northeast, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west. The principal settlement is the city of Cambridge. Modern Cambridgeshire was formed from the historic counties of Cambridgeshire and Huntingdonshire, together with the Isle of Ely and the Soke of Peterborough; it contains most of the region known as Silicon Fen.
Cambridgeshire is twinned with Kreis Viersen in Germany.