Europe is working full steam towards a digital identity for every EU citizen. And although it might be really useful to be able to hire a car everywhere in the EU with no hassles, Bart Custers, Professor of Law and Data Science at eLaw, the Center for Law and Digital Technologies, sees many loose ends.…

The EU proposal for a regulatory framework on artificial intelligence will not prevent the dangers of cybercrime or the spreading of fake news using ChatGPT. Cyber criminals can use the new technology to write harmful software, phishing mails and fake news.

The Public Prosecutor's Office (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases for genealogical research in criminal investigations. The method could be used in serious criminal cases that have stalled and it is already being used in investigations abroad. Whether…

There are many links between Leiden and the US. The highest office there has been held an impressive nine times by presidents with Leiden roots. This has led to memorable visits to Leiden University.

After nearly five years as President of the Executive Board, Annetje Ottow will be stepping down from the role as of 1 September. During her time as President, she helped shape the university’s strategic direction, strengthening its regional, European and international profile. Sustainability, and dignity…

Since 1 November 2025, Prof. Dr. Luc Sels has been the new president of Leiden University's Executive Board. In a message to our university he introduces himself and shares his first impressions.

Legal philosopher Bart Jansen teaches at universities around the world. In an interview two years ago, he spoke about his professional fascination for dictators and wars. Since then, the world has undergone major changes. High time for a follow-up interview.

Stilzitten doet alumnus Bart Jansen niet graag. Zo geeft hij les in onder meer Nederland, Maleisië en Curaçao, houdt hij zich naast het recht ook graag bezig met kunst en mystiek en vindt hij naar eigen zeggen ‘alles wat fout gaat’ wel interessant aan de rechtsfilosofie. ‘Ik ben gek op veelzijdige mensen;…

In this flash interview we get a flash introduction of our President and alumna Annetje Ottow.

An article in Leiden University’s Mare newspaper on 24 September states that the University Council advised against reappointing President of the Executive Board Annetje Ottow. The Board of Governors, deans and Annetje Ottow respond below.

The proportion of female professors at Dutch universities is increasing, but at a modest rate. At 34.2%, Leiden University is in the top three. These are the results of the Women Professors Monitor for 2025.

‘It truly is a plan by and for us all,’ said Annetje Ottow, President of the Executive Board, at the Dies Natalis celebration on 8 February. Leiden Law School was also actively involved developing in the strategic plan.

Annetje Ottow is stepping down as President of Leiden University’s Executive Board on 1 September 2025 after almost five years in the role. She looks back at the highs and lows – and ahead to what’s next.

Speaking for the Executive Board, Timo Kos reflects on the university’s security policy and what lies ahead. ‘We want to keep our buildings open, but we also need to be able to guarantee the safety of everyone there. It’s a real balancing act.’

Leiden University has a new Executive Board. Since 8 February 2021, Annetje Ottow has been the new President and Hester Bijl the new Rector Magnificus of the Board, while Martijn Ridderbos has continued in his role as Vice-Chairman.

The winner of the Leiden University Thesis Prize has made an original and substantial contribution to argumentation theory. This is what Annetje Ottow, President of the Executive Board and member of the LUF board, said at the online ceremony for the University’s thesis prizes. The winner of the first…

During a meeting at the University on 10 November, staff spontaneously removed a painting by artist Rein Dool from the wall in one of the meeting rooms in the Academy Building, reversed it and placed it on the floor. A tongue-in-cheek action with a serious undertone. This has led to a lot of commotion…

Leiden Mayor Peter Heijkoop visited the Faculty of Social and Behavioural Sciences and the Faculty of Science on Monday,

Annetje Ottow is the first female president of the Executive Board of Leiden University, which means a return to her Alma mater.

On International Women's Day (8 March) we take time to consider female emancipation and participation. What does this day mean for Leiden University, and how does it tie in with our aim of becoming more diverse and inclusive? We talked about these issues with Annetje Ottow, who recently became the…

If universities and research institutions want to tackle unacceptable behaviour in academia, they must shift their focus from dealing with complaints to preventing such behaviour in the first place. This is what the Royal Netherlands Academy of Arts and Sciences (KNAW) has concluded. It has therefore…

Leiden University and four other Dutch universities will appoint 51 PhD candidates to conduct solution-oriented research for and with the African continent.

A group of nine activists from Students for Palestine occupied part of the Academy Building on Wednesday 26 November. Outside, a group of around 30 demonstrators chanted slogans and called on the Executive Board to sever ties with Israeli universities.

‘Culture change takes time,’ said Vice-Rector Hester Bijl at the closing panel of the University’s Diversity Symposium on 26 January. She talked about the road to a diverse and inclusive university. The symposium provided plenty of concrete examples of small steps that can already be taken.

On 20 May 2022, eLaw - Center for Law and Digital Technologies of Leiden University organised the Hans Franken lecture for the third time. This year the lecture was delivered by Aleid Wolfsen, chairman of the Autoriteit Persoonsgegevens (Data Protection Authority (DPA)), the privacy watchdog of the…

The number of insect species is plummeting, which is why the University is creating a more biodiverse environment around its buildings. Annetje Ottow, President of the Executive Board, planted the first bee-friendly plants in the front garden of Oude UB on 20 September.

‘We could share our knowledge more with others and apply it more widely,’ said Annetje Ottow, President of the Executive Board, while presenting the new Strategic Plan on the University’s 447th Dies Natalis. The new Strategic Plan therefore focuses on innovating and connecting, among disciplines and…

Book Launch

The Durham Declaration was presented at the Climate Symposium marking the Coimbra Group’s 40th anniversary on 26 March. Leiden University is proud to be one of the first signatories of this declaration.

The Plants & Planets exhibition brings two worlds together in a dazzling mix of science, nature and art. It opens at Old Observatory Leiden and Hortus botanicus on 7 February.

Of the women studying at university, 52% have experienced some form of sexual harassment. For male students, the figure is 19%.

A diverse (ad hoc) committee will advise Leiden University’s Executive Board on its exhibitions policy in a broad sense, with a special focus on the painting by Rein Dool in the Academy Building.

Leiden University’s Executive Board has appointed Erwin Muller as Vice Rector of Organisational Development. In this role, he will help further professionalise and improve the university’s organisation as per the Strategic Plan.

Bachelor, Master

A professor from Leiden University, together with a former employee (who is also the professor’s partner), has been guilty of long-term unacceptable and often transgressive behaviour in the form of abuse of power and manipulation. This behaviour led to a culture of fear among staff who were largely…

What is the significance of the history of slavery for our present-day society? A special exhibition in the inner courtyard of the Academy Building features eleven insightful portraits of students and staff, and their answer to this question. The aim of the exhibition’s initiators is to make the subject…

Research into our history of colonialism and slavery, heart-to-heart conversations at a Keti Koti table, exhibitions, lectures and podcasts that establish the link between present and past. Staff and students participated in the national Slavery Memorial Year in many different ways. What have we learned…

No procession of professors, just a handful of people in the church and snowdrifts outside Leiden’s Pieterskerk: 8 February 2021 was no ordinary Dies Natalis. Carel Stolker transferred the rectorate to Hester Bijl, and Annetje Ottow became the new President of the Executive Board. With an honorary doctorate…

Leiden University no longer wishes to collaborate with fossil fuel partners that are not demonstrably committed to achieving the Paris Agreement targets. Exceptions will be made only if a collaboration demonstrably contributes to the energy transition. This proposal by the Executive Board was discussed…

How has evolution shaped our curiosity? And how does that curiosity ensure that we now have the technological ability to discover whether we are alone in the universe? This was all covered during the celebration of Leiden University’s 449th Dies Natalis.

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.

Today, 13 May 2024, Leiden University’s Executive Board is publishing the advice of the committee that investigated reports of unacceptable behaviour and breaches of academic integrity. These reports were about a professor from the university and their partner (a former member of the university staf…

The university is responsible for the safety of over 40,000 people who work, study and visit around 50 buildings in Leiden and The Hague. Find out which security measures are changing and what this means for you.

In his leaving interview, Martijn Ridderbos doesn’t have to think long when asked what he is most proud of. ‘Bringing people together; creating things together. Reducing the gap between researchers and the staff who support them because the latter are essential. We’ve achieved that and the seeds have…

In a topping out ceremony on Thursday 30 January, the new sports centre celebrated reaching its highest point and looked ahead to the future. The university will have a spacious and sustainable sports building by the start of 2026.

Vice-chairman of the Executive Board Martijn Ridderbos will leave Leiden University at the end of this year.

The importance of science communication and cross-boundary collaboration, and the ‘mantra’ of diminishing social cohesion in society: these all came up at Leiden University’s 448th Dies Natalis. A panel discussion including Leiden’s mayor Lenferink, music and two honorary doctorates completed the special…