Colonel William Baring du Pré, DL (5 April 1875 – 23 August 1946) was a British Conservative Party politician. Du Pré was educated at Winchester College and the Royal Military Academy, Woolwich, and was originally commissioned into the King's Royal Rifle Corps, from which he resigned as a lieutenant. Following the outbreak of the Second Boer War, he re-commissioned as a lieutenant in the 47th Company, Imperial Yeomanry, on 21 February 1900. He was captured in the "Yeomanry Disaster" at Lindley in May 1900 and held at Barberton prisoner of war camp. He later commanded the 2/1st Leicestershire Royal Horse Artillery (Territorials) and served on the Western Front 1915–18.