Robert Spear Hudson, 1st Viscount Hudson (15 August 1886—2 February 1957) was a British Conservative politician who held a number of ministerial posts during the Second World War.

Hudson was elected as Member of Parliament for Whitehaven in 1924 and served there until 1929. In 1931 he was returned for Southport. He served in several ministerial posts, becoming a Privy Counsellor in 1938 and the Minister of Agriculture and Fisheries in 1940, a post he would hold until the 1945 election.

Hudson was created Viscount Hudson in 1952.

Preceded by: George Tryon	Minister of Pensions 1935–1936	Followed by: Herwald Ramsbotham
Preceded by: Sir John Gilmour	Minister of Shipping 1940	Followed by: Ronald Cross
Preceded by: Sir Reginald Dorman-Smith	Minister of Agriculture and Fisheries 1940–1945	Followed by: Tom Williams