Edderside is a hamlet in the civil parish of Holme St. Cuthbert in Cumbria, United Kingdom. It is located approximately one mile as the crow files to the south-east of Mawbray, or two-and-a-half miles by road, and a similar distance east of Salta, and north-east of Allonby. The small hamlet of Jericho is located less than a mile to the north-east. Approximately 23 miles to the north-east is the city of Carlisle. Allonby Bay, an inlet of the Solway Firth, is one-and-a-half miles to the south-west, as is the B5300 coast road which runs between Silloth-on-Solway, six-and-a-half miles to the north, and Maryport, six miles to the south.