Marquesses of Zetland (1892)
- Lawrence Dundas, 1st Marquess of Zetland (1844–1929)
- Lawrence John Lumley Dundas, 2nd Marquess of Zetland (1876–1961)
- Lawrence Aldred Mervyn Dundas, 3rd Marquess of Zetland (1908–1989)
- Lawrence Mark Dundas, 4th Marquess of Zetland (b. 1937)
The heir apparent is the present holder's eldest son Robin Lawrence Dundas, Earl of Ronaldshay (b. 1965)
The heir apparent's heir presumptive is his brother Lord James Edward Dundas (b. 1967)
The heir apparent's heir presumptive's heir apparent is his son Milo James Dundas (b. 1998)
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