Donald Mackenzie Cameron (November 11, 1843 – May 12, 1936) was a Scottish-born merchant, journalist and political figure in Ontario, Canada.
He represented Middlesex West in the House of Commons of Canada from 1883 to 1887 as a Liberal member.
Cameron was born in Dingwall and was educated in Edinburgh and London, Ontario, having come to Canada in 1859.
He worked with the London Prototype and the Toronto Globe.
He was defeated by William Frederick Roome when he ran for reelection in 1887.