Viscount Samuel, of Mount Carmel and of Toxteth in the City of Liverpool, is a title in the Peerage of the United Kingdom.

[2] It was created on 8 June 1937 for the Liberal politician and former High Commissioner of the British Mandate of Palestine, Herbert Samuel.

His grandsons, the third and fourth Viscounts, were respectively a prominent Israeli chemist and neurobiologist, and an oil executive.

The first Viscount Samuel was the nephew of the banker Samuel Montagu, 1st Baron Swaythling.

The heir presumptive and last in line is the present holder's half-brother Hon.