Brigadier John Percival Whiteley OBE (7 January 1898 – 4 July 1943) was a British Army officer and a Conservative Party politician. Whiteley was commissioned into the Royal Artillery during the First World War, ending the war as a Lieutenant. In 1926 he transferred to the Life Guards, retiring in 1928 and joining the 99th (Buckinghamshire and Berkshire Yeomanry) Field Brigade, Royal Artillery (Territorial Army) as a Captain. He was promoted Major in 1932.