Koosje van Lessen Kloeke joined the Institute of Private Law as (part-time) Researcher Law & Life Sciences on 1 May 2023. She is working on a PhD thesis on the regulation of medicinal products exempted from the authorisation requirements under European pharmaceutical legislation.

Simona Demková is an Assistant Professor in European law at the Europa Institute. She is leading a collaborative research project on the 'EU's human-centred digital transformation' funded by a Leiden University starter grant. Her research expertise covers a broad range of European law, including European…

Vincent Delhomme is Assistant professor of EU Law at the Europa Institute, Leiden Law School since 1 May 2023. He coordinates the activities of the Leiden University Europe Hub on behalf of Leiden Law School. Between 2022 and 2024, Vincent was Visiting professor at UCLouvain, Belgium, and College of…

Michaël Peyrot’s research focuses on the reconstruction of Proto-Indo-European, in particular the verbal system, and on language contact and prehistory, especially in the Tocharian, Iranian and Indic branches. The leading question is how language contact can be used to draw conclusions about linguistic…

Bart Krans has held the chair in Private law and Civil procedure law since August 2016.

Jan van de Streek is Professor of Tax Law, Research Coordinator at the Department of Tax Law and a member of the Faculty Research Board of the E.M. Meijers Institute.

Tom Bouwman joined the Institute of Private Law as a postdoctoral researcher on 1 January 2023.

Ewine van Dishoeck researches molecules in space. She has gained world fame with her pioneering work. Her current passion is the hunt for water and the water cycle in space. This will provide answers to questions such as: where does the water in our rivers come from? And: could there be life on other…

Arjan Louwen is Assistant Professor at the Faculty of Archaeology

Jeroen Duindam is Professor of Early Modern History at the Leiden University Institute for History.

Joris Larik is Associate Professor of Comparative, EU and International Law at Leiden University. Since July 2025, he is the Director of Education of Leiden University College The Hague. In addition, he teaches at the Europa Institute of Leiden Law School and the College of Europe. Dr. Larik is an expert…

Robert Pitt is a PhD candidate at the Centre for the Arts in Society.

Joachim A. Koops is Chair of Security. His research focuses on Global Security Governance and the European Union’s foreign and security policies, the role of the United Nations, European Union, NATO (and their inter-organisational relations) in peace and security as well as crisis management, peacekeeping,…

Marc van der Ham (1984) is an external PhD candidate at eLaw – Center for Law and Digital Technologies at Leiden University.

Anchrit Wille has held the special chair of Transitions in the public sector established by the 'Stichting Leerstoelen CAOP' since November 2021. In her research she works at the interface of public administration and political science. Central themes include: political-administrative relations in national…

Armin Cuvyers is full Professor of European Law at the Europa Institute of Leiden University, where he holds the chair in EU Constitutional Law and Comparative Regional Integration. He is also the head of the department of European law and Director of CompaRe, the Leiden Jean Monnet Centre of Excellence…

Prof. Dr. Horst Fischer has been Professor of International Humanitarian Law at Leiden Law School since 1997.

Casper Wits is a University Lecturer in the Institute for Area Studies. His research focuses on postwar diplomatic and international history in East Asia, with a special interest in the development of Chinese and Japanse foreign policy and Sino-Japanese relations in this period. He also takes an interest…

Comic books and graphic novels are more important than ever in the Leiden University curriculum. That is why Leiden University Libraries (UBL) is currently working on expansion of its collections in this field. Yasco Horsman, University Lecturer at LUCAS, explains why this expansion is necessary and…

Philippe van Gruisen is an Associate Professor at Leiden University's Department of Economics.

Madeleine O. Hosli is Professor of International Relations at Leiden University (PhD 1992). Her main research interests are in international political economy, international organisations and European integration.

Gert-Jan Boon LL.M. MSc is a researcher and lecturer at Leiden Law School's departments of Company Law and Financial Law and Business Studies. Prior to this, he completed his master's degree in Marketing (Vrije Universiteit Amsterdam) and Corporate Law (Leiden University). He conducts research in the…

Vanessa Mak has been Professor of Civil Law at the Institute of Private law since 1 October 2020.

Alumni who live and work in Brussels met on 18 February at the annual Leiden Alumni in Brussels Event. As well as celebrating Leiden University’s 450th anniversary, they also looked at the challenges Europe faces.

Lucien van Beek is Assistant Professor at Leiden University Centre for Linguistics. His research focuses on Comparative Indo-European linguistics (morphology, semantics, lexicography, etymology) and philology, especially regarding the oldest sources of Greek. He conducted a VENI project 'Unraveling…

Dörner is interested in animal behaviour, neuroethology, ecology and anthropogenic effects on animal behaviour and species dynamics. The focus of her PhD is on the effects of light and noise pollution on migratory fish.

Marion Elenbaas is a University Lecturer at the Leiden University Centre for Linguistics.

Ellen Cieraad is a quantitative plant ecologist with broad research interests centered on understanding species’ distributional limits and responses of plants to their environment.