Cyril Barnet Salmon, Baron Salmon PC (28 December 1903 – 7 November 1991) was a British judge.
Cyril Barnet Salmon was the son of Montagu Salmon (1878-?), tobacco merchant, and Marian Nina Trevor, née Abrahams, his wife. He was the grandson of Barnett Salmon (1829-1897) co-founder of Salmon & Gluckstein, tobacco merchants. He was educated at Mill Hill School and Pembroke College, Cambridge.
Knighted in 1957 and sworn of the Privy Council in 1964, Salmon was a Lord Justice of Appeal from 1964 to 1972. On 10 January 1972, he was appointed a Lord of Appeal in Ordinary, being created, at the same time, a life peer with the title Baron Salmon, of Sandwich in the County of Kent.
On 25 July 1929, Salmon married Rencie Vanderfelt (d. 1942), the daughter of Sydney Gorton Vanderfelt, and they had two children, Gai Rencie Salmon (b. 1933) and David Neville Cyril Salmon (b. 1935).
Following his first wife's death in 1942, Salmon re-married in 1946 to Jean Beatrice Morris, Lady Morris (1912–1989), the elder daughter of Lieutenant-Colonel David Edward Maitland-Makgill-Crichton, and the divorced wife of Michael William Morris, 2nd Baron Morris.