Admiral of the Fleet Sir John Michael de Robeck, 1st Baronet, GCB, GCMG, GCVO (10 June 1862 – 20 January 1928) was an officer in the Royal Navy.

His campaign to force the straits, launched on 18 March 1915, was nearly successful, as the Turkish land-based artillery almost ran out of ammunition.

Born the son of John Henry Edward Fock, 4th Baron de Robeck (a member of the Swedish nobility)[1] and Zoë Sophia Charlotte Fock (née Burton),[2] de Robeck joined the Royal Navy as a cadet in the training ship HMS Britannia on 15 July 1875.

[4] Promoted to captain on 1 January 1902,[7] de Robeck was in July 1902 appointed in command of HMS Warrior, depot ship at Portsmouth.

[4][11] De Robeck became second-in-command, under Admiral Sackville Carden, of the Eastern Mediterranean Squadron (the Allied naval forces in the Dardanelles), with his flag in the battleship HMS Vengeance, in February 1915.

[4] Carden received instructions to force the straits and then push on to Constantinople: he made an unsuccessful attempt to do this on 19 February 1915, but then fell seriously ill, leaving de Robeck to take command, with his flag in the battleship HMS Queen Elizabeth, in March 1915.

[13] The initial landings failed to achieve their objectives, and the Allies made a further unsuccessful attempt, in August 1915, at Suvla Bay.