Vice Admiral Sir Robert Alastair Ewing KBE CB DSC (10 April 1909 – 19 May 1997) was a Royal Navy officer who became Naval Secretary.

[1] He served in World War II was given command of the destroyer HMS Cattistock in 1940.

[2] As Captain of the destroyer HMS Offa, he took part in the Commando raid on Vågsøy in northern Norway in December 1941 during the Norwegian Campaign and then saw the disintegration of Convoy PQ 17 on its way to Russia as 23 of its 36 ships were lost in July 1942 during convoy work.

[2] He was appointed to the NATO Standing Group Staff in 1950 and took command of the battleship HMS Vanguard in 1953 before becoming Director at the Naval Staff College at Greenwich in 1954.

[1] He went on to be Naval Secretary in 1956, Flag Officer Flotillas (Mediterranean) in 1958 and Flag Officer commanding the Reserves and Inspector of Recruiting in 1960.