Captain John Treasure Jones RD, (15 August 1905 – 12 May 1993) was a British sea officer who became a well-known media figure in the mid-1960s following his appointment as the last master of the Cunard liner, RMS Queen Mary. He has been described as one of the 20th century's most distinguished mariners, in war and in peacetime. His forebears were men of the sea, who had captained sailing ships, and he elected to follow in their tradition.