South Ronaldsay is an island parish, which lies in Orkney Council Area, some 13 miles (21 km) south of Kirkwall and 17 miles (28 km) southeast of Stromness in Orkney and includes 3 other small offshore islands.
It is located in the old county of Orkney, which disappeared following the Local Government (Scotland) Act 1974.
The parish has an area of 49.7 sq. km (19.1 sq. miles).