Robert Frederick William Robertson Nelson (29 February 1888 - 1 December 1932) was Unionist Party MP for Motherwell.
He was elected in 1918 as a supporter of David Lloyd George's coalition government. He stood down in 1922 for health reasons.
A businessman, Nelson followed his father's steps and was chairman and managing director of Hurst, Nelson & Co. (Limited), The Glasgow Rolling Stock and Plant Works, Motherwell, and chairman of Wagon Repairs, Ltd, Birmingham.
He was educated at Trinity College, Glenalmond.