Farnham is a village and civil parish in North Dorset, in the south of England, on Cranborne Chase, seven miles (eleven kilometres) northeast of Blandford Forum.

[5] Iron Age and Romano-British field systems were created in the surrounding area generally, though traces haven't survived at Farnham.

[3][7] For much of its history Farnham has been closely connected with Tollard Royal, the adjacent village and parish in the neighbouring county of Wiltshire.

[9] Farnham parish is situated at the head of the valley of the small Gussage Brook, on the dip slope of the hills of Cranborne Chase.

It covers 1,420 acres (570 ha) at an approximate altitude of 75 to 150 metres (250 to 500 feet) and geologically comprises chalk, overlain by clay-with-flints in places.