Colonel William Baume Capper CVO (6 February 1856 – 15 January 1934) was a British Army officer who became Commandant of the Royal Military College Sandhurst.

Educated at Haileybury,[2] Capper was commissioned into the 85th Regiment of Foot in 1876[3] and subsequently played cricket for Shropshire[4] in 1882-83 and for Staffordshire.

[7] He was commandant of the Royal Military College, Sandhurst from January 1907[8] to 1911[9] and then served in World War I, following which he was made a CVO in 1919.

[6] He died aged 77 in January 1934 at Newbridge Hill, Bath.

[1] He had three brothers all who served in the Army, one was Major-General Sir Thompson Capper KCMG, CB, DSO who was killed in World War I,[10] and another was Major-General Sir John Edward Capper.