Admiral Sir William Jock Whitworth, KCB, DSO (29 June 1884 – 25 October 1973) was a senior Royal Navy officer who served as Second Sea Lord and Chief of Naval Personnel from 1941 to 1944.

Whitworth joined the Royal Navy as a cadet in 1899,[1] and was on 15 January 1901 posted to the battleship HMS Ocean,[2] as she was sent to the China station during the Boxer Rebellion.

[1] Whitworth served in the Second World War and commanded the Battlecruiser Squadron in 1939.

[1] He participated in the Norwegian Campaign and in 1940, with his flag flying in the battleship HMS Warspite, he led the Royal Navy to victory at the second Battle of Narvik off Norway.

[5] He was made Second Sea Lord and Chief of Naval Personnel in 1941 and Commander-in-Chief, Rosyth in 1944.