Brigadier-General John Sanctuary Nicholson CB CMG CBE DSO (19 May 1863 – 21 February 1924) was a British Army officer and politician.

[1] During the First World War he joined the British Expeditionary Force and from April 1915 to December 1918 was base commandant at Calais.

[1] With a father and brother both being members of parliament Nicholson contested a seat in East Dorset in the 1910 general election.

[1] In 1921, he was elected the Member of Parliament for the Westminster Abbey constituency in a by-election following the death of the incumbent MP William Burdett-Coutts.

Nicholson, who had never married, died on 21 February 1924 of pneumonia at his house at South Audley Street, Mayfair aged 60.