Robert Randolph Bruce (July 16, 1863 – February 21, 1942) was an engineer, mining proprietor and the 13th Lieutenant Governor of British Columbia from 1926 to 1931.

He emigrated to the United States in 1887 before arriving in Canada to work for the Canadian Pacific Railway.

Bruce and his partner established a lead and silver mine near Windermere Lake in the East Kootenay region of British Columbia.

Unusually for former viceroys, he attempted to enter politics following his tenure as the Queen's representative and stood for the Liberal Party of Canada in the 1935 federal election but was narrowly defeated by Henry Herbert Stevens in the riding of Kootenay East.

[1] The government of William Lyon Mackenzie King appointed Bruce as Canada's second envoy to Japan with the title of Minister Plenipotentiary in 1936.