Admiral of the Fleet Sir Somerset Arthur Gough-Calthorpe (23 December 1865 – 27 July 1937), sometimes known as Sir Somerset Calthorpe, was a Royal Navy officer and a member of the Gough-Calthorpe family.
In the closing years of the War he served as Commander-in-Chief of the Mediterranean Fleet, in which capacity he signed the Armistice of Mudros on behalf of all the Allies, by which the Ottoman Empire accepted defeat and ceased hostilities.
The Occupation of Constantinople began with the Allied fleet entering Constantinople in November 1918 and it was Gough-Calthorpe's flagship, HMS Superb, that led the way.
After the War Gough-Calthorpe served as British Commissioner in the Ottoman Empire during a time of considerable political instability associated with the partitioning of the Ottoman Empire and the allied intervention in the Russian Civil War.