Walter Montagu-Douglas-Scott, 8th Duke of Buccleuch

Walter John Montagu Douglas Scott, 8th Duke of Buccleuch and 10th Duke of Queensberry, KT GCVO TD PC (30 December 1894 – 4 October 1973) was a Scottish peer and Conservative politician. He was the son of John Montagu Douglas Scott, 7th Duke of Buccleuch. His sister, Alice, married Prince Henry, Duke of Gloucester (one of the paternal uncles of Queen Elizabeth II) in 1935, becoming a member of the British Royal Family.

Montagu Douglas Scott was educated at Eton and Christ Church, Oxford and had a military career commanding the 4th KOSBs. He was also Captain-General of the Royal Company of Archers.

As Earl of Dalkeith, Scott was Scottish Unionist Party Member of Parliament (MP) for Roxburghshire and Selkirkshire from 1923 until 1935, when he succeeded as Duke of Buccleuch and Duke of Queensberry. He was succeeded as MP for the constituency by his brother, Lord William Scott. According to Cowling, he met German ambassador Joachim von Ribbentrop in London. Seen as pro-German, he was compelled to 'resign' as Lord Steward by King George VI.