The Flag Officer Plymouth [1] was a senior Royal Navy appointment first established in July 1969.

The office holder was responsible for the administration of the facilities of the two major Royal Navy at Plymouth and Portsmouth.

The appointment was established in July 1969 when the two major home commanders-in-chief, Commander-in-Chief, Plymouth and Commander-in-Chief, Portsmouth were amalgamated into the new centralised Naval Home Command.

[3] On 30 December 1970, Vice-Admiral J R McKaig CBE was appointed as Port Admiral, Devonport of HM Naval Base, Devonport, and Flag Officer, Plymouth.

On 5 September 1971, all Royal Navy Flag Officers holding positions of Admiral Superintendents at Royal Naval Dockyards were restyled as Port Admirals.