| Honorific Prefix: | Admiral |
| John Cameron | |
| Birth Date: | 15 June 1874 |
| Birth Place: | London, England |
| Allegiance: |  United Kingdom |
| Branch: | Royal Navy |
| Serviceyears: | 1887–1933 |
| Rank: | Admiral |
| Commands: | HMS Phaeton HMS Tiger HMS Glorious Coast of Scotland |
| Battles: | Second Boer War World War I |
| Awards: | Companion of the Order of the Bath Member of the Royal Victorian Order |
Admiral John Ewen Cameron, (15 June 1874 - 28 July 1939) was a Royal Navy officer who became Commander-in-Chief, Coast of Scotland.
Born in London,[1] Cameron was commissioned into the Royal Navy in 1887 and went on to fight in the Second Boer War.[2] He served in World War I and took part in the Battle of Jutland as Captain of the cruiser HMS Phaeton.[3] After the War he commanded the battlecruiser HMS Tiger and then the aircraft carrier HMS Glorious.[3]
He was appointed Commander-in-Chief, Coast of Scotland in 1928.[4] He was promoted to vice-admiral on 23 May 1929 and retired the following day. He was promoted to Admiral on the Retired List on 1 September 1933.[5]
He lived at Christon Bank near Embleton in Northumberland.[2]
In 1906 he married Marion Gertrude Granger; they had four daughters.[2]