Vice-Admiral Eric William Longley-Cook, CB, CBE, DSO (6 October 1898 – 20 April 1983) was a Royal Navy officer.

[1] He saw action in the battleship HMS Prince of Wales in the British Adriatic Squadron.

[1] He served in the Second World War as commanding officer of the cruiser HMS Caradoc from July 1939,[2] as deputy director of Training and Staff Duties from October 1940 and as deputy director of Gunnery and Anti-Aircraft Warfare from July 1941.

[3] After the war he became Chief of Staff for the Home Fleet in November 1946 and Director of Naval Intelligence in May 1948.

[3] In that capacity he warned the British Government that the United States "was set to bomb Russia first" and that "all-out war against the Soviet Union was not only inevitable but imminent".