Natalie is a Professor at UNSW Sydney’s Faculty of Law & Justice, Australia, and an Australian Research Council Future Fellow.

She is currently President of the Australian Branch of the International Law Association and a Trustee for the UK-based charity, Human Rights at Sea. Professor Klein was previously Dean of Macquarie Law School (2011-2017), as well as Acting Head of the Department for Policing, Intelligence and Counter-Terrorism at Macquarie University (2013-2014). Professor Klein teaches and researches in different areas of international law, with a focus on law of the sea and international dispute settlement. She provides advice, undertakes consultancies and interacts with the media on law of the sea issues. 

Professor Klein has been a Visiting Fellow at the Lauterpacht Centre for International Law at Cambridge University, a non-resident Fellow at the Lakshman Kadirgamar Institute in Sri Lanka and MacCormick Fellow at the University of Edinburgh. Prior to joining Macquarie, Professor Klein worked at Debevoise & Plimpton LLP, for the Government of Eritrea (1998-2002) and in the Office of Legal Affairs at the United Nations. Her masters and doctorate in law were earned at Yale Law School and she is a Fellow of the Australian Academy of Law.