Admiral Sir William Coldingham Masters Nicholson, KCB (28 October 1863 – 9 January 1932) was a Royal Navy officer who went on to be Third Sea Lord and Controller of the Navy.

[2] A Commander in the Royal Navy, he was on 10 September 1902 appointed in command of the torpedo gunboat HMS Antelope, serving in home waters.

[3] He served in World War I and, as Captain of HMS Canada, saw action at the Battle of Jutland in 1916.

[4] He went on to be Rear Admiral i.e. Second of Command of the 1st Battle Squadron later that year.

[5] He was appointed Third Sea Lord and Controller of the Navy in 1919[6] and was given command of the 2nd Battle Squadron in October 1920.