Complete open access may not be possible because of various reasons: research ethics, privacy legislation, intellectual property, continuing research. The Easy archive at KNAW/DANS provides various access levels to deal with these issues.

You are entitled to an allowance for your commuting expenses. The amount of your commuting allowance depends on your means of transport and the number of kilometres.

The university is committed to providing students and staff with a safe, secure learning and work environment. This is an important condition for good education and research: students and staff need to be – and to feel – safe and secure. On this page you can read how Leiden University works to ensure…

On 2 April, the final of the Legal Tech Challenge 2026 took place in the Academy Building of Leiden University. During the final, teams of students pitched their technological solutions to societal challenges.

Inaugural lecture

Lecture

Locking your screen before leaving your desk: it’s so easy to do but we often forget. This quick action protects both you and the university. Do you always lock your screen when you leave to get a coffee, walk to the printer or chat with a colleague in the corridor?

Individuals have the right to instruct the university to delete their personal data in a number of cases. For instance, if the university no longer needs the data, or if the person withdraws consent previously given.

Whether you’re a student, staff member or external service provider, it’s important that you feel safe at Leiden University. A range of measures are in place to assure safety and security in all the university’s buildings and grounds.

Research

If you have a plan that could improve the education or the learning environment of the Faculty of Humanities in terms of diversity or inclusion, you can apply for a grant from the faculty’s JEDI Fund. This year, Nasreen has been helping to develop a new syllabus for the first-year Ancient History co…

Inaugural lecture

A hidden disability can make studying a considerable challenge, partly because of the disability itself, but also because others may not realise that extra support is justified. To overcome this problem, the Faculty of Humanities is introducing the Hidden Disabilities Sunflower.

In our building, a new, colorful exhibition is now on display! Twelve artists from the collective "De Leidsche Mondialen" are showcasing their work in various locations within the Faculty of Social Sciences (FSW).

Do people actually understand the constitution? This is what Jelle But, PhD candidate at Constitutional and administrative law, wondered. To find out, he conducted a survey among 1333 respondents. His research shows that lawyers and other legal professionals actually do not have a better understanding…

Seksueel misbruik tussen broers en zussen kan ook na jaren nog grote impact op de familierelaties. Dat blijkt uit onderzoek van Sheila van Berkel, Iva Bicanic en Anja van der Voort, die slachtoffers met elkaar in gesprek brachten over hun ervaringen. ‘Ouders ontkenden of minimaliseerden het misbruik…

The Dutch Public Prosecution Service (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases in an effort to solve deadlocked murder cases. Bart Custers, Professor of Law & Data Science at eLaw, Center for Law and Digital Technologies, expects that this is permissible from…

Orange the World 2025

If you need any help with your research or if you encounter problems during your PhD track, Leiden University provides several different types of support for PhD candidates. There are also groups, networks and communities in which you can meet other PhD candidates.

Inaugural lecture

Inaugural lecture

Inaugural lecture

Lecture, Leids Actualiteitencollege

A variety of age checks are required, both in order to protect children and to ensure that they can participate online, a new study funded by the European Commission finds. The article on the study, co-authored by Simone van der Hof, Professor of Law and Digital Technologies at eLaw, was published in…

Start thinking in advance about the selection for long-term preservation.

Answers to the most common questions about Maileon

Read where to go with your questions.

Good ICT resources are crucial for having a smooth working environment at your new place of employment. Here we briefly explain what you need and where you can find the most important ICT services.

Valedictory lecture, minisymposium

What is the best way for us as a society to deal with all the different forms of diversity? Professor Marlou Schrover will use the EuroScience Open Forum (ESOF) to explore this question with colleagues and the public.

Protests against textbooks on trans persons in America and against a reading hour by drag queens in Rotterdam: it has been raining protests recently against people with a gender expression that does not match their birth sex. Why does this evoke such resistance? We asked Professor by special appointment…

What role does the frontal lobe play in understanding sentences? Assistant professor Jurriaan Witteman has received a grant to replicate a leading study on this question. ‘As there is some doubt about the reliability of existing neuroimaging results, it’s important to replicate influential studies.’

Tech giants such as Google, Apple, and Microsoft are increasingly shaping the digital world we live in. Reijer Passchier cautions: 'Urgent measures are needed to curb this influence.'

Lindsey Boosten followed her passion by combining the study of aviation and law in the Advanced Master in Air and Space Law in Leiden. It turned out to be a great choice: ‘It was one of the best years from my student days.’

Lecture, Global Histories of Knowledge Seminar

That Tessa Schiethart finished her bachelor's degree in International Studies with a thesis on Indonesian women's reasons for veiling was a coincidence. Or so she thought. Six years later, her book Seeing and Being Seen, in which she writes about her life with a wine stain and vision loss, is in the…

On 22 January, a panel of international experts on nuclear deterrence gathered at the Campus The Hague to discuss the future of nuclear deterrence in Europe. The panel addressed key aspects of nuclear strategy and the impact of Russia's nuclear rhetoric in the context of the war in Ukraine.

From a queer art exhibition to a podcast about people with disabilities, the JEDI Fund this year again honored several projects that contribute to diversity and inclusion.

After 2.5 years as defence minister, it is time for Kajsa Ollongen to hand over the baton. In front of a packed audience, she gave her farewell speech at Leiden University in The Hague on Tuesday, which included personal lessons and memories, from sleeping on the ground with the prime minister to the…

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…

While health data is essential for scientific research, that data also needs to be protected. In her doctoral thesis, Irith Kist found a balance between protecting the individual and exchanging health data.

Technology holds so much promise – from self-driving cars to enhanced physical performance from smart implants under the skin. But we should not let ourselves be caught off guard. That is the message of Bart Custers, Professor of Law and Data Science in his inaugural lecture on 21 May. ‘We don’t talk…

Conference, Van willen naar zijn