On 9 January 2019, Marieke Wierda defended her thesis 'The Local Impact of a Global Court: Assessing the Impact of the International Criminal Court in Situation Countries'. The doctoral research was supervised by Prof. dr. C. Stahn en Prof. dr. L.J. van den Herik.

On 28 February 2019, Kabir Duggal defended his thesis 'Principles of Evidence in Investor-State Arbitration, Burden, Standards, Presumptions & Inferences'. The doctoral research was supervised by Prof. dr. E. De Brabandere.

Stam defended his dissertation ‘Freedom of speech and the suppression of discrimination in the Netherlands: a constitutional-developmental approach’ on 12 November 2025. The doctoral research was supervised by Afshan Ellian and Bastiaan Rijpkema

PhD defence

PhD defence

PhD defence

PhD candidates are encouraged to start thinking about their future careers well before the defence of their thesis.

Our research projects address cutting-edge and forward-looking societal challenges at the intersection of law and technology.

Leiden University Centre for Linguistics (LUCL) has a longstanding tradition in research in the world’s languages and features unique linguistic expertise. At LUCL, we help develop interdisciplinary approaches to linguistic phenomena by facilitating the interaction between data-driven and theory-driven…

Knowledge is everywhere at Leiden University. It is also accessible for those who do not study or work at the University.

The team of WIIS-Netherlands exists out of the board members and the advisory council.

Jens Iverson, Assistant Professor of International Law and a Researcher in the Jus Post Bellum Project, defended his Ph.D. dissertation on 21 September 2017.

In this thesis, dynamic testing principles were applied to examine young children's potential for learning. Our studies focused on the role of cognitive flexibility, to further increase our understanding of the cognitive processes involved in children's ability to learn from instruction and feedback,…

Research in the arts at the Academy of Creative and Performing Arts (ACPA)  

The Leiden Academic Centre for Drug Research (LACDR) is a centre of excellence for multidisciplinary research on drug discovery and development.

The 3rd International Workshop on Klinefelter Syndrome, Trisomy X, and XYY will be held at The Academy Building, Rapenburg 73, Leiden. It is situated in the city center, close to hotels, restaurants and attractions.

LIACS organizes different lectures and seminars like the LCN2 Seminars and SAILS Lunch Time-seminars.

The Faculty of Social and Behavioural Sciences brings together high-quality research and outstanding teaching.

PhD defence

PhD defence

PhD defence

PhD defence

PhD defence

PhD defence

The Leiden Institute of Chemistry (LIC) is the basis for research and collaborations of the Leiden chemistry groups. Chemistry is the central science enabling a healthy future in a sustainable society. Chemistry researchers at Leiden University take a fundamental approach in finding tailored solutions…

PhD defence

PhD defence

PhD defence

This publication by Cornelis van Tilburg, will be published at Sidestone Press on September 28, 2022. It discusses various aspects of city gates in the Western Roman Empire: Italy, Spain, Gaul, Germany and Britain.

On 26 juni 2018, Claire Achmad defended her doctoral thesis 'Children’s Rights in International Commercial Surrogacy: Exploring the Challenges from a Child Rights, Public International Law Perspective'. The doctoral research was supervised by Prof. Dr. Mariëlle Bruning.

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

On 25 January 2018 Yannick van den Brink defended his doctoral thesis titled ‘Voorlopige hechtenis in het Nederlands jeugdstrafrecht’ (‘Pre-trial detention in the Dutch juvenile justice system’). The doctoral research is supervised by Professor Ton Liefaard and Professor Mariëlle Bruning.

Leiden University’s Annual Report covers education, research, innovation, knowledge valorisation, infrastructure, staff and finances.

On 18 september 2018, Claudia Bouteligier defended her doctoral thesis 'Dialoog in recht en literatuur. The doctoral research was supervised by Prof. mr. dr. A. Ellian.

In this policy paper, Joachim Koops and Christian Patz are discussing Germany’s comprehensive assessment of Protection of Civilians readiness at the national level.

On Tuesday 26th September Jessica Hill defended her thesis ‘On the road to adulthood. Delinquency and desistance in Dutch emerging adults’. The supervisor is Professor Arjan Blokland.

Both Europe and Latin America face challenges globally and at home. Conflicts over land and resources have been resurgent in recent years.

On 31 January 2018 Vestert Borger defended his dissertation entitled ‘The Transformation of the Euro: Law, Contract, Solidarity’. The dissertation has been written under the supervision of Professor Stefaan Van den Bogaert (supervisor) and Dr Jorrit Rijpma (co-supervisor).

You have been admitted to a PhD track at Leiden University. What do you need to know when you start conducting your PhD research?

Leiden Institute of Advanced Computer Science (LIACS)

Institute of Biology Leiden (IBL) is an internationally oriented institute for research and education in biology. We are part of the Faculty of Science at Leiden University.

On 13 December 2018, Stijn Voskamp defended her thesis 'Onderwijsovereenkomst'. The doctoral research was supervised by Prof. mr. A.G. Castermans.

The Van Vollenhoven Institute for Law, Governance and Society (VVI) is part of the Leiden Law School.

On 9 May 2018, Roy van Keulen defended his doctoral thesis 'Digital Force: Life, Liberty & Livelihood in the Information Age'. The doctoral research was supervised by Prof. dr. A. Ellian.

The research of the Applied Mathematics cluster is concerned with such diverse topics as dynamical systems, representation theory, differential equations and pattern recognition.

How can party bans be justified? Which parties were banned in post-war Europe – and why? Do militant democracy instruments work? Is an international militant democracy concept in the making?

The Intelligence and Security Studies Group offers specialised teaching and research on contemporary intelligence and security challenges. We support both academic and professional development, with a focus on governance, ethical norms, and international cooperation.