Roundell Cecil Palmer, 3rd Earl of Selborne, CH, PC (15 April 1887 – 3 September 1971), known as "Top Wolmer" and styled Viscount Wolmer from 1895 to 1941, was a British administrator, intelligence officer and Conservative politician.

In 1942, he inherited his father's earldom and his last political post was as Minister of Economic Warfare from 1942 to 1945.

It was his policy to back the Chetniks in Yugoslavia despite the numerous items of intelligence that suggested that they were in league with the Germans.

They had six surviving children: Lord Selborne's wife died in 1959 and on 3 March 1966, he married Valerie Bevan née de Thomkahaza, a daughter of a Hungarian politician.

[4] Upon Palmer's own death in 1971 in Alton, Hampshire aged 84, he was succeeded in his titles by his grandson, John.