Andrew Thorburn Thompson (May 27, 1870 – April 20, 1939) was a Canadian military officer, editor, lawyer and a third generation political figure of Canada.
His grandfather, also named David, had sat in the 1st and 2nd Legislative Assemblies for the United Province of Canada representing Haldimand County.
Due to redistribution, Thompson's riding was abolished and in the 1904 federal election, he ran for re-election in the redrawn district of Haldimand but was defeated by his Conservative opponent by less than 300 votes.
As Thompson had commanded Iroquois soldiers during World War I he was seen as a mediator who could be trusted by both sides.
However, Thompson's Commission to Investigate and Report upon the Affairs of the Six Nations Indians issued a report that recommended that the hereditary council that governed the reserve be replaced by an elected council thus depriving Deskaheh of his right to speak for the Six Nations.