The earliest record for Drumlanrig is from 1384, spelled Drumlangryg. There are a number of possible etymologies for the name. It may represent Cumbric drum 'ridge' + -lanerc 'small area of cleared woodland'. However, the first element may also be Gaelic druim 'ridge', either added to a Cumbric name or to Scots *lang-rigg 'long ridge'.
- James, Alan G. (2014). The Brittonic Language in the Old North: A Guide to the Place-name Evidence (PDF). Vol. 2: Guide to the Elements. p. 152. Archived from the original (PDF) on 11 September 2014.