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. After serving as a junior officer during the Fourth Anglo-Ashanti War, he became naval attaché observing the actions of the Imperial Russian Navy during the Russo-Japanese War and then went on to command an armoured cruiser and then a battleship during the early years of the 20th century.