Athelstan Sigfrid Mellersh Rendall OBE (3 January 1914 – 18 July 2006), known to his friends as Flaps Rendall, was a British pilot.
After gaining his pilot's licence, Rendall served with Imperial Airways, the Government of colonial Nigeria, the British Overseas Airways Corporation, and British Airways, becoming commander of its Vickers VC10 fleet. For his services during the Second World War, Norway appointed him a Knight of the Order of Saint Olav. He ended his career as an advisor to Air Ceylon.