George Mackenzie Dunnet CBE FRSE FIN FRSA (19 April 1928 – 11 September 1995) was a Scottish ornithologist and ecologist. He acted as an official advisor to the British government on ecological issues relating to the North Sea oil industry, salmon farming and the link (if any) between badgers and bovine tuberculosis. The latter resulted in a government report generally called the Dunnet Report.
He was the first Director of the Culterty Field Station (studying a variety of ecological issues) at Aberdeen University.