Thomas Dickson Archibald (8 April 1813 – 18 October 1890) was a Canadian businessman, politician, and senator.

Born in Onslow, Nova Scotia, Archibald had by the early 1830s established himself as a businessman in the area surrounding Sydney, on Cape Breton Island, engaging in merchandising and goods transportation by ship.

He advocated for residents on Cape Breton Island to continue to mine for coal on their property after the end of the monopoly.

Archibald opposed bills that would equalize the electoral weight of counties in Nova Scotia and allow French fishermen, subsidized by their government to sell their products duty-free.

[1] In October 1867 he was appointed by royal proclamation to the Canadian Senate to represent North Sydney.

[3] Archibald married Susan Elizabeth Corbett on 14 November 1839, and they had seven children, including Edward, Thomas, Blowers, William, and a daughter named Emma.