Charles Raymond Bentley (* 23 December 1929 in Rochester, New York; 19 August 2017 in Oakland, California) was an American geophysicist and polar researcher. He was a professor at the University of Wisconsin-Madison. Mount Bentley and the Bentley subglacial ditch in Antarctica are named after him. In 1957, together with other researchers, including Mario Giovinetto, he undertook an expedition with tracked vehicles for the first measurement of ice density in the West Antarctic.
In 1990 he was elected Fellow of the American Association for the Advancement of Science.