William Albert Boyd Douglas (10 January 1923 – 17 May 2013) was a unionist politician in Northern Ireland. Douglas worked as a farmer and served as a flight lieutenant in the Royal Air Force during World War II. He rose to prominence as Limavady District Master in the Orange Order, leading protests against the civil rights movement, and organising loyalist demonstrations in Dungiven. Douglas' son, known as Boyd Douglas, also became a politician.