Martinsell Hill, near Oare and north of Pewsey, is the third highest point in the county of Wiltshire, southwest England, at some 289 m / 948 ft above sea level.

To the west are Oare Hill and the grounds of Rainscombe House.

[2] There are good views from the top, including Salisbury Cathedral, over 25 miles away.

[3] At the summit is an Iron Age univallate hillfort of 32 acres (13 ha) with a clearly visible bank and ditch system.

[5] The hillfort is a scheduled ancient monument and was partially excavated by Colt Hoare.