Duke of Roxburghe

The Duke of Roxburghe (pronounced /ˈrɒksbərə/) is a title in the peerage of Scotland created in 1707 along with the titles Marquess of Bowmont and Cessford, Earl of Kelso and Viscount Broxmouth. John Ker, 5th Earl of Roxburghe became the first holder of these titles. The title is derived from Roxburgh in the Scottish Borders.

The Duke has the subsidiary titles of: Marquess of Bowmont and Cessford (created 1707), Earl of Roxburghe (1616), Earl of Kelso (1707), Earl Innes (1837), Viscount Broxmouth (1707), Lord Roxburghe (1600), and Lord Ker of Cessford and Cavertoun (1616). All of the titles form part of the peerage of Scotland, with the exception the Earldom of Innes, which belongs to the peerage of the United Kingdom. The Duke's eldest son bears the courtesy title of Marquess of Bowmont and Cessford.

The dukedom and its associated titles descend to heirs who shall inherit the earldom which in turn had a very specific line of descent. On the death of the 4th duke the titles became dormant as no one could prove their claim. In 1812 the House of Lords ruled in favour of Sir James Innes-Ker, 6th Baronet, of Innes (see Innes baronets), rejecting claims by the heir female of the second earl and heir male whatsoever of the first earl.

The Duke of Roxburghe would be the Chief of Clan Innes, but cannot be so recognised as he retains the name Innes-Ker.

The family has its seat at Floors Castle in Kelso, Scotland.