Henry St John (Royal Navy officer)

Admiral Henry Craven St John (5 January 1837 – 21 May 1909) was a Royal Navy officer who became Senior Officer, Coast of Ireland Station.

He was the son of Charles William George St John and the great-grandson of Frederick St John, 2nd Viscount Bolingbroke.

Naval career
St John became commanding officer of the sloop HMS Sylvia in November 1873, commanding officer of the Central battery ship HMS Iron Duke in August 1885 and Senior Officer, Coast of Ireland Station in January 1892 before he retired in January 1895.