Leiden University celebrated its 444th anniversary with a historical procession on 8 February. It celebrated this year’s Dies Natalis in time-honoured fashion with a ceremony in the Pieterskerk, but broke with tradition by sending professors out to primary schools.

At the initiative of several of its professors, Leiden University has joined the international Healthy Universities network. Surrounded by space hoppers, the initiators of this move and those present exchanged experiences and tips at the kick-off meeting on 17 October. ‘I don't miss my chauffeur'…

How can we make sure that The Hague becomes even more of a city of education and knowledge? This was the theme during the festive opening of the college year in The Hague on 30 August. Filled with ambition, representatives from all The Hague's educational institutions, the municipality of The Hague…

A dissertation covered in hot pink faux fur, antique prints of PhD ceremonies, a pot encrusted with sealing wax: the Hora est! anniversary exhibition at Oude UB takes you to the ritual yet idiosyncratic world of PhD ceremonies.

From academic freedom to security and medical breakthroughs: during Leiden University’s 451st Dies Natalis, the speakers reflected on the role of universities in a world of social and geopolitical tensions.

Universities cannot survive in this highly competitive world without collaboration. And the ultimate aim is to make the world a safer and more sustainable place. This was Rector Carel Stolker’s message during the 441st Dies Natalis.

Welcome from the Rector Magnificus of Leiden University

It was time for a celebration in the Faculty Club on 11 December. Twenty driven lecturers were awarded their Senior Teaching Qualification by Vice-Rector Magnificus Hester Bijl.

Underneath you will find more information on how the university works.

The Centre for Science and Technology Studies (CWTS) is a research institute at Leiden University working on improving how science is practiced and governed and how it serves society.

The fifth edition of the Owada Chair Symposium, that was held in Leiden on 14 and 15 October 2025, highlighted the law and politics of international criminal justice.

Leiden University has partnerships in the local region, in the Netherlands, in Europe and with countries on almost all the world's continents. Students and researchers benefit from these partnerships, but society is also a beneficiary, says Rector Carel Stolker.

The new privacy laws make it more difficult to combat human trafficking: under-age victims are often not registered. In her lecture, Cleveringa Professor Corinne Dettmeijer called on everyone to be on the alert. 'We don't want to live in a society where people are treated as throw-away objects.'

Crucial information about research, funding or how university rankings are created is often not freely accessible. The Barcelona Declaration on Open Research Information calls for such information to be made open. Professor Ludo Waltman is one of its initiators. What needs to change?

A delegation from Leiden University recently embarked on a knowledge mission to various NGOs, universities and government organisations in Indonesia. New partnerships were formed and important knowledge exchanged, and researchers from Leiden gave guest lectures.

Different groups can have different memories of the same historical event. This can lead to conflict but does not have to. How is this, and how can countries and people reconcile with the past?

The Netherlands is an open country and should remain so. This is what the rectores magnifici of the Dutch universities write in an opinion piece. Because academic training that does not provide enough of an international perspective lacks quality and relevance to the job market and society.

Over the centuries painters and photographers have depicted students at study in Leiden. An exhibition at the Hortus botanicus reveals the similarities and differences in 450 years of student life.

The Lorentz Center is a melting pot that is visited by researchers from around the world. ‘Miracles happen’ during the five-day interactive workshops at the Center. And there is an extra reason to celebrate the center’s 25th anniversary. On 28 April, the Dutch Research Council (NWO) and Leiden University…

Luckily we’ve been able to meet up on campus again for a few months now after two years of mainly online teaching. Alongside the inconvenience, enforced digitalisation has brought us valuable innovations and smart tools. The question is: what’s going well and what could we do differently? I’d love to…

It’s become somewhat of a tradition at Leiden University: the strategic conference at the end of June each year. About a hundred staff including the faculty boards, academic directors, directors of the expertise centres and Administration and Central Services, the representative councils and student…

LERU, the League of European Research Universities, celebrated its fifteenth anniversary on 7 March in Brussels. The network of leading European universities has now grown to include 23 universities.

Despite an eventful afternoon – with Students for Palestine occupying the Academy Building – political scientist Hélène Landemore gave her Cleveringa Lecture as planned on 26 November. She reflected on the protest and the importance of open debate, within the university and within a democracy.

Many members of the Royal Family have studied at Leiden University and several have been awarded an honorary doctorate.

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

Our students and staff have strong feelings and deep concerns about the ties between Dutch universities and the fossil fuel industry. It’s a thorny issue and as a university we’re keen to chart our course for the future, but we cannot do so alone. I therefore hope to be able to discuss the matter with…

How small steps can lead to big change: that was the theme of the Leiden Education Festival. Students and lecturers came to Scheltema on 9 May to share their experiences of educational innovation.

NATO not only safeguards our security and stability, but also defends Enlightenment principles, promoting prosperity, health and freedom. This is what eminent psychologist and thinker Steven Pinker argued to a packed Great Auditorium.

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…

Leiden University is awarding an honorary doctorate to virologist Marc van Ranst. Van Ranst has been one of the main advisers of the Belgian government during the Covid pandemic. German Arabist Beatrice Gründler will also receive an honorary doctorate for her work in the field of Oriental Manuscript…

Research by The Young Academy on the length and intensity of the Dutch academic year has given us food for thought. Do our staff have enough time and space to conduct research? And do we ask too much of our students? The Ministry of Education, Culture and Science asked us universities to think about…

A delegation from Leiden University visited various universities in Japan at the end of March. The strong ties between the Netherlands and Japan are still based on a long tradition of knowledge exchange.

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…

ChatGPT, the text-generating chatbot, has recently become available for anyone to use. Is this artificial intelligence (AI) tool a threat to our teaching?

I was disgusted by the recent Ongehoord Nederland broadcast on 15 September. The racist and hateful comments made by alumna Raisa Blommesteijn were, as far as I am concerned, way over the line and in my opinion also violate Article 1 of the Constitution of the Netherlands.

The League of European Research Universities (LERU) was launched in Leiden 20 years ago. This anniversary will be celebrated with a major conference (19 – 21 May) on an urgent theme: How does science contribute to sustainable and resilient societies? We put this question to Kurt Deketelaere, Secretary-General…

Met een openingswoord, een paneldiscussie op de Spaanse Trappen in Wijnhaven en een druk op de rode knop voor het gebouw zelf, is POPcorner The Hague donderdagmiddag officieel geopend door rector magnificus Hester Bijl.

Decent work involves opportunities for work that delivers a fair income, care for occupational health and safety, freedom for people to organize and equality of opportunity and treatment for all women and men. The Labour Law department at Leiden University conducts research and provides education on…

The origin and evolution of galaxies are closely tied to the cyclic feedback processes between stars and the interstellar medium (ISM).

The Low Frequency Array enables studies of low-frequency carbon radio recombination lines with unprecedented sensitivity, spectral and spatial resolution.

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

This article provides a behavioral perspective that examines responsibility attribution to the national government (upward) and policy implementers (downward) as a function of performance relative to decision-makers' aspiration levels. The study proposes that perceived accountability increases the propensity…

The sixth issue of Ex Novo explores how ‘peripheral’ regions currently approach both the practice and theory of public archaeology placing particular emphasis on usually underrepresented regions of Eastern and Central Europe, the Mediterranean and beyond.

Almost three years after receiving her honorary doctorate, Dr Graça Machel returned to Leiden University. Over the course of two days she spoke with students, researchers, and other interested persons, about human rights – particularly those of women and children – in a world in which these are continually…

Giving lectures, marking exams, essays or theses, supervising students and PhDs, doing research and, as if that wasn’t enough, also trying to raise the necessary funding. There is a limited number of funds for academic research and a large number of applications. Many of our researchers therefore experience…

The eight ambitions of Leiden University's vision on education - Learning@LeidenUniversity - were the key theme of the packed Education Festival on 19 June. More than 200 lecturers and students came to PLNT, Leiden's innovation hotspot, for inspiration and best practices in the field of educational…

The Executive Board proposes to take the decision to suspend the existing institutional student exchange programmes with two Israeli universities, and until further notice not to engage in any new exchange programmes with Israeli universities that have comparable links with the Israeli military (the…

From scanners in lecture halls to systems for working from home: the discussion about new technology is being held on various fronts. That is why the University wants to make more use of its in-house experts. At the Technology and Trust symposium at Leiden University on 2 February, researchers from…

Nearly a year since the abrupt switchover to mostly online learning, the Digital Education seminar gave teaching staff the opportunity to review their experiences. What can stay in 2021 and what must go? Frequently voiced opinions: yes please to digital tools that make lectures more interactive; yes…

Scrap the radical cuts to research and teaching. This was researchers and students’ message to government at the opening of the new academic year. Various speakers in Leiden’s Pieterskerk highlighted the importance of science for society.