Southdean is a village in the Scottish Borders area of Scotland, on the A6088, by the Rule Water and in the Wauchope Forest area. Other settlements nearby include Abbotrule, Bedrule, Bonchester Bridge, Denholm, Hallrule, Hobkirk and the Swinnie Forest. James Telfer (1802 - 1862) was born in Southdean, and wrote ballads about farming life, typically with a zoological slant.