William Donald Aelian "Bill" King, DSO & Bar, DSC (23 June 1910 – 21 September 2012) was a British naval officer, yachtsman and author. He was the oldest participant in the first solo non-stop, around-the-world yacht race, the Sunday Times Golden Globe Race, the only person to command a British submarine on both the first and last days of World War II. and the last surviving British World War II submarine commander at the time of his death.