Sir David Bruce Pitblado KCB CVO (18 August 1912 – 9 July 1997) was a principal private secretary to the office of the Prime Minister of the United Kingdom. Serving from 1951 to 1956, he was associated with Prime Ministers Clement Attlee, Winston Churchill, and Anthony Eden. With his colleague Jock Colville, he was one of Churchill's last two principal private secretaries at 10 Downing Street.[1]