The Department of Earth Sciences is the Earth Sciences department of the University of Oxford, England, which is part of the university's Mathematical, Physical and Life Sciences Division. The department is based in the Earth Sciences building on South Parks Road in the Science Area.

Tamsin Alice Mather is a British Professor of Earth Sciences at the Department of Earth Sciences, University of Oxford and a Fellow of University College, Oxford. She studies volcanic processes and their impacts on the Earth's environment and has appeared on the television and radio.