Marquesses of Bute (1796)
- John Stuart, 1st Marquess of Bute (1744–1814)
- John Stuart, Lord Mount Stuart (1767–1794)
- John Crichton-Stuart, 2nd Marquess of Bute (1793–1848) (had succeeded as Earl of Dumfries in 1803)
- John Patrick Crichton-Stuart, 3rd Marquess of Bute (1847–1900)
- John Crichton-Stuart, 4th Marquess of Bute (1881–1947)
- John Crichton-Stuart, 5th Marquess of Bute (1907–1956)
- John Crichton-Stuart, 6th Marquess of Bute (1933–1993)
- John Colum Crichton-Stuart, 7th Marquess of Bute (b.1958)
The heir apparent is the present holder's son John Crichton-Stuart, Earl of Dumfries (b. 1989).
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