Mains and Strathmartine is a small parish, which lies in Angus Council Area, some 3 miles (6 km) north of Dundee in Dundee City and 5 miles (8 km) northwest of Newport-on-Tay in Fife.
It is located in the old county of Forfarshire, which disappeared following the Local Government (Scotland) Act 1974.
The parish has an area of 13.5 sq. km (5.2 sq. miles). Mains and Strathmartine has 5 neighbouring parishes; namely Auchterhouse, Dundee, Liff & Benvie, Murroes and Tealing. The boundaries of this parish were modified as a consequence of the Local Government (Scotland), 1894.