Viscounts Knollys (1911)
- Francis Knollys, 1st Viscount Knollys (1837–1924)
- Edward George William Tyrwhitt Knollys, 2nd Viscount Knollys (1895–1966)
- David Francis Dudley Knollys, 3rd Viscount Knollys (b. 1931)
The heir apparent is the present holder's son Hon. Patrick Nicholas Mark Knollys (b. 1962)
The heir apparent's heir apparent is his son Alexander Edward Somerset Knollys (b. 2000)
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