Dilton Marsh is a village and civil parish in the far west of the county of Wiltshire, in the southwest of England.

The parish includes the small settlements of Penknap (east of Dilton Marsh village); Penleigh (northeast); Stormore (now contiguous with the west of the village); Clearwood (a little further west); and the rural hamlets of Fairwood (north) and Hisomley (southwest).

The clay soil in this area provides fertile farmland and good quality grazing and is served by a system of traditional drainage ditches.

[3] The original settlement, Old Dilton, is some 3⁄4 mi (1.2 km) southeast of the present village centre at grid reference ST860490, on the banks of the Biss Brook.

[2] Formerly there was a brick and tile works in the east of the parish, and this has influenced the overall appearance of homes in the village.

The house was built in the early 18th century on the site of an older one, extensively altered in 1872 by James Piers St Aubyn, and restored in the 1970s.

Regular services ceased in 1900 after the building of Holy Trinity at Dilton Marsh, and the church was declared redundant in 1973.

The parish is part of the Ethandune electoral division,[25] which elects one member of Wiltshire Council.

[26] At the eastern end of the village is Dilton Marsh railway station, a simple pair of platforms on the Westbury–Warminster line.

This is a request stop and is the subject of the John Betjeman poem Dilton Marsh Halt.