Sir Charles Ernest St John Branch KC (2 June 1865 – 1939), known as St John Branch, was a British colonial administrator, who served as Chief Justice of Jamaica 1923-25 and the 23rd Chief Justice of Ceylon 1925-26.
Branch was born in San Ferdinand, Trinidad, the eldest son of Rev.
In 1910 he was made Auditor General of Jamaica and in 1921 a puisne judge in the Straits Settlements.
In 1923 he returned to Jamaica as Chief Justice, a position he held until 1925.
Branch married at Christ Church, Crookham, on 24 March 1900, to Agnes Irene Templer, daughter of Philip Arthur Templer, former Administrator of Dominica.