Lavanya Rajamani (born 1973) is an Indian lawyer, author and professor whose area of expertise is international climate change law, environmental law, and policy. She is currently a professor of International Environmental Law at the Faculty of Law, University of Oxford, a Yamani Fellow in Public International Law at St Peter's College, Oxford, and a visiting professor at the Centre for Policy Research. She has been a Rhodes Scholar and is the youngest Indian academic to be invited to offer a course in public international law at the Hague Academy of International Law in the Netherlands.