Captain (retired) George Francis Locke Marx, O.B.E. (10 September, 1890 – ) served in the Royal Navy.
Marx entered the Navy as it was transitioning to the new training scheme for cadets and was sent directly to the Royal Naval College, Dartmouth as part of the September 1905 intake term.
Marx was promoted to the rank of Lieutenant on 15 April, 1911.
In July, 1914, Marx was appointed to Tyne for command of reduced T.Bs. He commanded T.B. 36 from August to 8 December 1914, when he was appointed to Suffolk as torpedo officer.
Marx was promoted to the rank of Lieutenant-Commander on 15 April, 1919.
Marx was promoted to the rank of Commander on 30 June, 1924.