Arisaig and Moidart is a coastal parish, which lies in Highland Council Area, some 21 miles (34 km) west of Fort William in Highland and 23 miles (37 km) northeast of Tobermory in Argyll and Bute.
It is located in the old county of Invernessshire, which disappeared following the Local Government (Scotland) Act 1974.
The parish has an area of 467.8 sq. km (180.6 sq. miles). Arisaig and Moidart has 4 neighbouring parishes; namely Ardgour, Ardnamurchan, Glenelg and Kilmallie. The boundaries of this parish were modified as a consequence of the Local Government (Scotland), 1894.