Cliff Ollier

Cliff Ollier (born 1931) is a geologist, geomorphologist, soil scientist, emeritus professor and honorary research fellow, at the School of Earth and Geographical Sciences University of Western Australia. He was formerly at Australian National University, University of New England, Australia, Canberra University, University of Papua New Guinea, and University of Melbourne.

Throughout his career he was a prolific author (as C.D Ollier), and he has contributed to reference works such as The Oxford Companion to the Earth.