High Wych is a village and civil parish in the East Hertfordshire district of Hertfordshire, England. The village is located a little over one mile south-west of the town of Sawbridgeworth, and around three miles north-east of Harlow in the neighbouring county of Essex. At the 2021 census the parish had a population of 841.
The parish includes the settlements of Great Pennys, Trimms Green, Sacombs Ash, Allens Green, Chandlers, Carters, Rook End, Hoskins and Sayes Park. The village contains a Church of England primary school and a late 19th-century church, St James, with a marble reredos and a Father Willis organ. A moated site is all that remains of the medieval residence of Mathams. There is also a Georgian historical house called the Manor of Groves which is now a hotel.
High Wych was historically part of the parish of Sawbridgeworth. It became a separate ecclesiastical parish in 1862. High Wych remained part of the civil parish of Sawbridgeworth until 1 April 1901 when it also became a separate civil parish.