On Thursday 1 December 2016 at 13.45 hrs, Francisco Sepulveda Ramirez will defend his doctoral thesis ‘Residence in Tax Treaties' at the Academy Building of Leiden University. Supervisor is Professor F.A. Engelen.

Glycoconjugate vaccines are composed of microbial poly- or oligosaccharides covalently linked to a carrier protein.

Since 2022, a higher proportion of people in the Netherlands have been victims of cybercrime than of 'traditional' crime. The Bachelor in Cybersecurity & Cybercrime trains you to become an all-round cyber expert, equipping you to take on the fight against cybercrime.

The role of domestic and wild resource exploitation in Bronze Age subsistence

The International Arbitration Training Course, offered by Leiden Law School in cooperation with the Permanent Court of Arbitration, focuses on the theory and practice of international arbitration as a distinct field of the law and field of legal practice. Registration is now open!

This film will be screened on Sunday, 15 February 2026 at 7:00 pm.

The deans (chairs of the faculty boards) form the Board of Deans, which is chaired by the Rector Magnificus.

Researcher Lianne Visser has been awarded the G.A. van Poelje Prize for the best dissertation in public administration of the past year. It is a renowned award for doctoral research in public administration in the Netherlands and Belgium.

Responsible AI for science and a strong and resilient society.

The author Manon Uphoff from Utrecht will be Leiden University’s new ‘writer in residence’ from autumn 2025. As the writer in residence, Uphoff will contribute to several courses on writing offered by the BA Dutch Language and Culture programme.

‘The Hague is rapidly developing to become a knowledge city and Leiden University is making an important contribution to this development.' These were the words with which alderman Joris Wijsmuller opened The Hague Day of Architecture on Saturday 20 May 2017. Wijnhaven was the focal point of the day…

Spatial technology such as virtual reality can help patients who have difficulty with spatial cognition, for instance if they keep on losing their way. In her inaugural lecture, neuropsychologist Ineke van der Ham will talk about the importance of avatars, the patient experience and room for innovat…

The Faculty of Social and Behavioural Sciences is committed to being a safe, comfortable, and equitable space for both staff and students: a place where a diversity of people feel valued and welcome, where there is room for a diversity of perspectives.

On this page you find all the ways through which the Institute of Psychology aims to foster Open Science.

At FSW, we carry out remarkable projects in research and education. Interdisciplinary, driven by our values, and in collaboration with the world around us. We are pleased to highlight some of our most outstanding projects. This is our 2024 annual overview.

An effective and equitable approach to resource conflicts?

Leiden University provides ambitious students with the most recent and innovative areas of knowledge, and offers them the freedom to develop their own area of expertise.

Leiden University was the first university to be established in the Netherlands. William of Orange gave Leiden Academia Lugduno Batava in 1575, it is said in recognition of the city’s courageous resistance against the seige by the Spanish invaders.

How do plant defense genes get activated?

The Tatiana Afanassjewa-lecture series is a series of public talks in Dutch by Leiden physicists on wednesday evenings, intended for everyone with an interest in physics.

Many students have difficulties to read and give meaning to algebraic formulas. In this study it is explored whether graphing formulas with pen and paper will improve students’ability to reason with algebraic formulas.

The CS-NL network is a vibrant and active community of Citizen Science practitioners, initiators, researchers and participants from across all corners of society (Academia, Industry, Government, Civil Society, and Citizens) who come together to share knowledge and know-how for participatory research…

About nine million people worldwide contract tuberculosis each year. Research into new treatment for this disease has received fresh stimulus with more efficient techniques and a new understanding of how the tuberculosis bacteria works.

This project looks at the current practices of marriage law in Indonesia. It examines the often ambiguous views different groups hold of marriage, from local villagers in Bengkulu to women’s activists in Jakarta, and how these relate to the development of national law on the one hand and local practices…

Archaeological and Historical Perspectives on Eastern Cuisine and Western Foodways

Lecture

The overall objective of ECS is to widen and strengthen the European Citizen Science community through capacity building and awareness raising activities such as the creation of a European Citizen Science Academy and the establishment of a network of 28 ECS Ambassadors.

From now on, the Master's Vitality and Ageing will be called Health, Ageing and Society. In terms of content, the programme of this international interdisciplinary Master's at Leiden University remains the same. The new name better covers the content of the programme and thus enhances recognition for…

This PhD dissertation examines international responsibility for the crime of aggression from a public international law perspective. Under customary international law, as well as the amendments to the Rome Statute of the International Criminal Court adopted in the Review Conference in Kampala in 2010,…

This collection includes six short policy-focused contributions exploring how legislation and policy on counter cyber terrorism unfold at the national level in the United States, the United Kingdom, China, Russia, France, and at the regional level of the European Union.

Across Leiden University and LUMC, people are taking steps to put academia into motion. Learn what they are doing, why it matters and their tips for colleagues.

Leiden University provides ambitious students with the most recent and innovative areas of knowledge, and offers them the freedom to develop their own area of expertise.

How was time understood during the colonial period by Tlaxcaltecan Naua communities? What is the relationship between time, spirituality and ritual in the present-day Naua community of Santa Catarina? What does this tell us about the strengths and values of Indigenous heritage and about the impact of…

LUCDH facilitates workshops that promote the acquisition of skills and knowledge in employing digital tools. Workshops are held in person, and rarely hybrid.

Leiden University Centre for Linguistics (LUCL) is one of seven institutes housed within the Faculty of Humanities.

This project investigates how sign languages change and spread over time, and how this is influenced by their transmission history.

This thesis seeks to investigate how cancer-associated mutations affect the pharmacological properties of selected GPCRs—primarily A2AAR and 5-HT2CR—through a combination of ligand binding assays, signaling readouts, kinetic profiling, and cellular functional assays.

PhD defence

More papers, more grants, more students: constant growth is still the gold standard at universities. Neuroscientists Anne Urai and Claire Kelly argue that this mentality obstructs us in resolving such complex societal problems as the climate crisis. Their alternative? The university as a doughnut.

Conferences, Workshops and Lectures showcasing research and tools in Digital Humanities.

We are delighted to welcome Josh Gold as Visiting Fellow of The Hague Program for Cyber Norms at Leiden University’s Institute of Security and Global Affairs from 1 - 9 May.

Almost two weeks after the general elections in the Netherlands, negotiations between the leaders of the four parties who were expected to form a new coalition government are still not going smoothly. Ronald Plasterk, appointed as ‘scout’ to explore possible alliances, has said he will need one more…

Cathelijn Waaijer (CWTS) was awarded the 2015 Eugene Garfield Doctoral Dissertation Award at the 15th International Society of Scientometrics and Informetrics Conference at istanbul last month.

Pieter Omtzigt, leader of the ‘Nieuw Sociaal Contract’ (‘New Social Contract’) party, has withdrawn from talks to form a new Dutch government. Government finances are a divisive issue, and Ronald Plasterk’s decision to withhold documents on government finances seems to have particularly broken trust.…

Volgens Wim Voermans, hoogleraar staatsrecht, zullen losse erkenningen van landen niet zoveel betekenen. Erkenning is volgens de hoogleraar pas betekenisvol als ook grote spelers als de VS meedoen, zegt hij in NU.nl.

Other COI publications can be found on Leiden Law Blog, the Leiden Law Methods Portal, and in the drop-down tabs below.