Major-General Sir Llewellyn William Atcherley, CMG, CVO, KPM (1 March 1871 – 17 February 1954) was a Canadian-born officer in the British Army and Chief Constable of West Yorkshire Constabulary.
He was born in Elizabethtown, now Brockville, Ontario to Lieutenant-Colonel Francis Topping Atcherley and educated in England at Oundle School.
He joined the British Army and after training at the Royal Military College, Sandhurst (RMCS) became a junior officer in the East Lancashire Regiment.
For his service in this war, he received a brevet rank of major on 20 November 1900, and was noted for future staff employment.
[3] During the First World War he was recalled to the Reserve of Officers, with the temporary rank of lieutenant colonel and the post of assistant quartermaster general.