Dunrossness is a coastal island parish, which lies in Shetland Council Area, some 13 miles (21 km) south of Lerwick and 29 miles (46 km) south of Brae in Shetland and includes 3 other small offshore islands.
It is located in the old county of Shetland, which disappeared following the Local Government (Scotland) Act 1974.
The parish has an area of 120.5 sq. km (46.5 sq. miles). Dunrossness lies next to Lerwick parish.