Charles George Percy Delacourt-Smith, Baron Delacourt-Smith, PC, JP (25 April 1917 – 2 August 1972) was a British trade unionist and Labour Party politician.
Born in Windsor and named after his father, he was the only son of Charles Smith and his wife Ethel. He was educated at The Windsor Boys' School and went then to Wadham College, Oxford, graduating with a Master of Arts
Delacourt-Smith worked as librarian for the Oxford Union Society until 1938, when he became employed at the New Fabian Research Bureau as a research assistant. In 1939, he came to the Civil Service Clerical Association and was an assistant secretary until 1953. Subsequently, he joined the Post Office Engineering Union, serving as its general secretary 1967. In 1960, he was nominated a Justice of the Peace, assigned to the County of London.
Following the outbreak of the Second World War, Delacourt-Smith entered the Royal Engineers in July 1940. He was commissioned in January 1943 and was transferred to the Royal Army Service Corps, where he was promoted to captain and was mentioned in despatches. After the end of the war Delacourt-Smith was admitted to the British House of Commons in 1945, having been elected for Colchester. He represented the constituency until 1950 and during this time was Parliamentary Private Secretary to Philip Noel-Baker in the latter's capacity as Secretary of State for Commonwealth Relations. In 1947, he was chosen as an executive member of Labour's Research Department, a position he held for the next four years.