High Cross is a village in the civil parish of Thundridge, in the East Hertfordshire district, in Hertfordshire, England. It lies upon what was the A10, however the A10 Wadesmill by-pass has now been built around High Cross and neighbouring villages. Sections of the A10 that used to run through High Cross and the neighbouring settlements such as Wadesmill were once part of the Roman road, Ermine Street. It is 4.6 km north of the town of Ware and 7 km north east of the county town of Hertford. The population was 853 as of the 2021 census.