Horningsea is a small village north of Cambridge in Cambridgeshire in England. The parish covers an area of 2.6 square miles. It lies on the east bank of the River Cam, and on the road from Cambridge to Clayhithe. The nearest railway station is Waterbeach, 1+1⁄2 miles away. Listed as Horningesea in the Domesday Book, the village's name derives from either "Island of a man called Horning" or "Island by the horn-shaped hill".