Lord William Robert Keith Douglas (6 March 1783 – 5 December 1859) was a Scottish politician and landowner.

He represented the Dumfries Burghs constituency between 1812 and 1832 and served, on a number of occasions, as one of the Lord Commissioners of the Admiralty.

He owned sugar plantation estates in Tobago which had formerly belonged to Walter Irvine, whose daughter, Elizabeth, he married on 24 November 1824.

Douglas was associated with three different claims he owned 576 slaves in Tobago and received a £10,907 payment at the time (worth £1.31 million in 2025[2]).

[4] Lord William is buried at Dunino, Fife, a village close to his family seat at Grangemuir, near Pittenweem.