Sir William McNair Snadden, 1st Baronet JP (15 January 1896 – 23 November 1959) was a Scottish Tory politician. The youngest son of the Reverend James Snadden, the young Snadden was educated at Dollar Academy. In 1915, early in the Great War, he was commissioned into the Argyll and Sutherland Highlanders and served with the British Expeditionary Force in France between 1915 and 1917. He was Chairman of the Scottish Food Hygiene Council, President of the Smithfield Club, and President of the Scottish Unionist Association. He was a keen farmer and stock breeder in Perthshire.