Errol Eustace Harris (February 19, 1908 – June 21, 2009), sometimes cited as E. E. Harris, was an American South-African philosopher. His work focused on developing a systematic and coherent account of the logic, metaphysics, and epistemology implicit in contemporary understanding of the world. Harris held that, in conjunction with empirical science, the Western philosophical tradition, in its commitment to the ideal of reason, contains the resources necessary to accomplish this end.