Forrest McDonald (January 7, 1927 – January 19, 2016) was an American historian, who wrote extensively on the early national period of the United States, on republicanism, and on the presidency, though he is possibly best known for his polemic on the American South.
He was a professor at the University of Alabama, where together with Grady McWhiney he developed the hypothesis that the South had been colonized by "Anglo-Celts", rather than the British Protestant farmers who populated the North.