On 9 January 2019, Willem van der Muur defended his thesis 'Land rights and the forces of adat in democratizing Indonesia'. The doctoral research was supervised by Prof. dr. A.W. Bedner and Prof. dr. J.M. Otto.

On 11 June 2020, Sabine Witting defended her thesis 'Child Sexual Abuse in the Digital Era: Rethinking Legal Frameworks and Transnational Law Enforcement Collaboration'. The doctoral research was supervised by Prof. J.J. Sloth-Nielsen and Prof. S. van der Hof.

Circularity is an essential aspect of the industry transformation towards resource-efficiency, climate neutrality and long-term competitiveness. It can produce substantial material savings along value chains and production processes, generate added value and unlock economic opportunities.

PhD at the Natural Products Laboratory, Institute of Biology, Leiden University - the Netherlands

How was anti-communism organized in the West? New volume edited by Giles Scott-Smith, Luc van Dongen and Stephanie Roulin on the aims, arguments and associations of a range of transnational anti-communist activists during the Cold War.

This book aims to unravel some of the mysteries surrounding this exceptional group of larger-than-life Bronze Age blades.

This research evaluates the Youth Act. It will provide an overview of how the transition takes place, whether the transformation process develops in the right direction and whether the legal safeguards are functioning properly.

In this article, the authors explore why there is substantial cross-national variation in the level of regulatory clarity surrounding cryptocurrencies

The Public Management and Organisation section of the Institute of Public Administration focuses on public organisations and the behaviour of the managers and professionals working within them. Our vision is that understanding human behaviour and organisational dynamics is essential for understanding…

This subproject of 'From Homo Economicus to Political Animal' analyzes Greek economic thinking of the Hellenistic period.

Climate adaptation strategies frequently include the sourcing of heritage, encompassing landscapes, built environments and cultural practices. However, effective climate change governance requires taking seriously the stakes of local communities and the power relations that structure heritage initia…

On 23 juni 2019, Zygimantas Juska defended his thesis 'The Role of Collective Redress Actions to Achieve Full Compensation for Violations of European Union Competition Law'. The doctoral research was supervised by Prof. dr. T.R Ottervanger.

The Hazelhoff Centre for Financial Law provides academic teaching and performs research in the field of financial law.

The Old Observatory is located on the grounds of the Hortus. This is the oldest surviving university observatory in the world. Since 1633, the University of Leiden has used the various rooms for the education of students. The Visitor Center on the ground floor of the Old Observatory is part of the Hortus…

How do technologies of computer vision, which promise to replace humans in the understanding of images, work in practice in the field of security, and what are their ethical and political implications?

We always try to answer questions about the Old Observatory Leiden as well as possible. Choose the subject you have a question about from the dropdown menu below.

The Criminal Justice Master’s programme offered by the institute of Criminal Law and Criminology at Leiden University will provide you with the skills necessary for a successful career in the private or public sector.

Explore career opportunities after the MSc Dutch Politics at Leiden University: pursue roles in politics, public policy, research, consultancy, and international organizations.

On 14 December, Jouke Tegelaar defended the thesis 'Single supervision, single judicial protection? Towards effective judicial protection in Single Supervisory Mechanism composite procedures'. The doctoral research was supervised by Matthias Haentjens and Willemien den Ouden.

Opportunities, challenges, and future perspectives of people-centered approaches in dynamic historic urban landscapes

On 20 februari 2019, Chris van Oostrum defended his thesis 'Regres bij concernfinanciering'. The doctoral research was supervised by Prof. mr. S.M. Bartman.

On 1 December 2020, Bernadette Muscat defended her thesis 'Insolvency Close-out Netting: A comparative study of English, French and US laws in a global perspective'. The doctoral research was supervised by Prof. M. Haentjens and Prof. B. Wessels.

The Europa Institute of Leiden University is one of the oldest academic institutes specialised in the law of the European Union and the European Convention on Human Rights; it was established in 1957, the same year as the European Economic Community itself.

The rise and fall of the cesspit in an urban context

The project seeks to develop an eco-design framework for single-use medical devices and packaging

When researching languages in historical context, our goal is to understand the nature of linguistic variation in the past, and explain the extent to which the socio-cultural context of bygone times contributed to shaping linguistic variation and change.

Responsible AI for science and a strong and resilient society.

Bachelor, Master, Short Course, PhD

Solving societal problems often requires a solid multidisciplinary preparation. The Economics and Governance specialisation, offered by the Department of Economics and the Institute of Public Administration, combines insights from both disciplines.

The location of The Hague is beneficial for this master’s programme in terms of substantive focus and the various links to international institutions located in this city.

The master's programme in Theoretical Philosophy at Leiden University offers students the opportunity to investigate fundamental questions concerning the nature of reality using the tools of analytic philosophy.

In this dissertation, a corpus of 595 seventeenth-century letters (mainly private ones) written between 1664 and 1672 is examined from a sociolinguistic perspective.

Immersive, interdisciplinary and didactically-sound learning activities designed to promote capacity building in various game-based formats.

The Public Administration specialisation in Economics, Governance and Management combines public administration with economics to analyse issues such as the climate or housing crisis. You will learn to think economically and formulate policy advice.

The Intelligence and Security research group focuses on intelligence and security within the European Union. Its approach is interdisciplinary and reflects ISGA’s broad perspective, combining insights from ethics, history, law, political science, psychology, and sociology.

What makes us more than our rank

Professor by Special Appointment Anouk Goemans has received the National Youth Care Award 2025 from the ‘Stichting Steunfonds Pro Juventute’. The cash prize of €30,000 will go towards her research on youth care and youth protection.

The aim of the project is to contribute to the process of archive formation ongoing in Post-Apartheid South Africa through the inclusion of photographs that have been either unacknowledged or excised from the national canon.

Microbial Sciences' contribution to the Bioactive Molecules research theme is to discover new bioactive molecules and enzymes and unravel their mechanisms of action, regulatory networks, and the (bio)synthetic pathways required for their production.

Conference

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure, Arts and leisure

The Dutch municipality of Deventer recently organised an open tender to grant a coffeeshop licence, drawing 1035 responses. Annemarie Drahmann, associate professor in administrative law, commented in ‘Trouw’ newspaper about this procedure.

In an interview with Jaap van den Herik, Professor emeritus Law and IT, legal magazine Mr. writes that The Hague municipality wants to attract more legal tech start-ups. The municipality has therefore commissioned the Leiden Centre of Data Science (LCDS) of Leiden University to conduct a study into…

During a symposium in honour of his 60th birthday, statistician Aad van der Vaart received the royal award of Knight in the Order of the Lion of the Netherlands. Colleagues talk about his significance for their field and how they got to know him. ‘The collaborations with Aad have been one of the great…

Guus Heerma van Voss, professor emeritus of labour law, delivered his farewell lecture on 18 October and held a mirror up to his colleagues and himself. Had they done enough to ensure the welfare state keeps up with the times? ‘Did we just stand by and watch?’

Professor by special appointment Jojanneke van der Toorn organised a symposium in cooperation with Workplace Pride, hosted by the university in the academy building on 18 May. Jojanneke van der Toorn occupies the chair of LGBT workplace inclusion, a special appointment that Van der Toorn and Leiden…