Donald McMillan (1807 - July 15, 1876) was a Canadian businessman and political figure. He represented Vaudreuil in the 1st Canadian Parliament as a Conservative member.
He was born in Scotland in 1807, the son of Hugh McMillan,[1] and came to Glengarry County in Upper Canada in 1823. He married Olympe Mongenais.[1] McMillan later moved to Rigaud, where he sold flour and feed. He also served as lieutenant-colonel in the local militia. He died at Rigaud in 1876.
His son Hugh also later represented Vaudreuil in the House of Commons.[2]