Hexton is a small village and civil parish in Hertfordshire, England, about 6 miles (10 km) west of Hitchin.

The southern half of the parish is part of the chalky downs of the Chiltern Hills, which are covered with short turf and plantations of fir trees.

Hexton formerly belonged to the half-hundred of Hitchin, but when it came into the possession of the abbots of St Albans Abbey it was probably added by them to their hundred of Cashio.

Much of the parish was owned by George Hodgson, owner of Hexton Manor, a large modernized house standing in an extensive park.

[3] Far older is the Iron Age camp of Ravensburgh Castle,[4] a scheduled ancient monument which straddles a hilltop a mile to the south-west.