Dudley William Mason GC (7 October 1901 – 26 April 1987) was the British master of the tanker SS Ohio during the Second World War.

Mason went to school in Long Ditton before going to sea as an apprentice at 17 in June 1920 with Eagle Oil and Shipping Company with whom he qualified as a master mariner at age 30.

[2] In July 1942, the 14,000-ton tanker Ohio, belonging to the Texas Oil Company, was requisitioned on loan by the British Ministry of War Transport and placed under Eagle Oil's management;[3] although the youngest of the company's masters, Mason was chosen to captain her "on account of his proven initiative and efficiency and splendid fortitude".

She sustained grave damage from a torpedo, two sticks of bombs lifted her out of the water and another exploded in her boiler room.

The KING has been graciously pleased to award the GEORGE CROSS to Captain Dudley William Mason, Master, SS Ohio.

The unwieldy condition of the vessel and persistent enemy attacks made progress slow, and it was uncertain whether she would remain afloat.

Throughout he showed skill and courage of the highest order and it was due to his determination that, in spite of the most persistent enemy opposition, the vessel, with her valuable cargo, eventually reached Malta and was safely berthed.