Jasper Knoester, decaan van de Faculteit Wiskunde & Natuurwetenschappen, blikt terug op 2025 in "het jaar van Jasper".

On Friday 5 September, to mark our 450th anniversary we celebrated the opening of the faculty year together with the Leiden Revisited alumni event. Combining both annual events was a huge success, especially as staff brought along their family, partner or friends.

Ten years later, a group of veterans still struggle daily with the effects of their deployment to Afghanistan. Sanne van der Wal, a PhD candidate at the Leiden University Medical Center (LUMC), conducted research into the effects of PTSD.

Since 1 January 2020 - with the transition to the Dutch Civil Code - the system of writing off leave has changed. When you take leave, the system automatically writes off the hours that fall due first.

Another year has reached its end. And what a year it has been! On December 17th staff and students of the Faculty of Archaeology came together to celebrate and reminisce. The event's central topic was the closure of the 50 year anniversary of the collaboration between the Faculty of Archaeology and…

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.

Staff Association

With the holidays just around the corner in this dark month of December, when we light candles as a symbol of warmth and hope, we would like to take a moment to reflect on this past year. We have accomplished a great deal together but the year has been difficult at times.

The book ‘Geleerde Zorgen: twee eeuwen academische geneeskunde in Leiden’ (‘Learned Care: two centuries of academic medicine in Leiden’) was presented on 16 December to Annetje Ottow (President of the Executive Board of Leiden University) and Pancras Hogendoorn, Dean and member of the Executive Board…

The theme of the opening of this year’s academic year was peace and justice. With the climate crisis and the war in Ukraine, these are turbulent times. During the ceremony those present reflected on what the academic community and universities can mean in times of crisis and conflict.

On March 25, the Advanced Masters of Science in International Relations and Diplomacy (MIRD) celebrated the 20th Anniversary of the programme. The celebrations began with the Reconnect event, bringing current students and alumni together, and concluded with the MIRD Gala. Throughout the day, the tight-knit…

During the first weekend of October, a group of fourteen Master of Arts in European Union Studies alumni returned to the place it all began, 15 years after graduating from Leiden University. The international group, representing the Netherlands, Norway, Slovenia, Bulgaria, Hungary, Latvia, Belgium and…

On 1 July – Keti Koti, in the year ahead, our university community will be able to reflect extensively on the history of slavery by engaging in research, education and many other activities.

Leiden University Scholarly Publications is a database of publications by academics from and institutions affiliated to Leiden University. Researchers and PhD candidates use LUCRIS Publication Management (PM) to add publications (except for doctoral theses) to the Repository. Wherever possible, publications…

As a result of the current corona measures, attendance at the Opening of the Academic Year on 6 September will be restricted to a maximum of 75 persons. The ceremony can, however, be viewed online by taking part in a video wall.

In the new Annual Report 2020 we report on not only the research and teaching, but also the knowledge transfer, operational management and general policy at Leiden University in 2020. The report is divided into a general section and a section with the figures, i.e. the university’s financial stateme…

The Russian threat to Europe, pro-Palestine protests, the passing of psychologist Andrea Evers and speculations on extraterrestrial life. These were among our most popular articles of the year.

The University has national holidays and compulsory closures. National holidays are not deducted from your vacation hours, whereas compulsory closures are.

After a turbulent Covid year, the well-being of our students and staff has the highest priority. How can we prevent physical and mental health problems? This was the key question at the Opening of the Academic Year in Pieterskerk in Leiden on 6 September.

The opening of the new academic year highlighted students' and lecturers' personal motivators. Incoming students were encouraged to be bold, forge their own paths and grow by trial and error.

The Leiden Papyrological Institute celebrates its 90th year anniversary

At the first Climate Café of 2025, we celebrated the one-year anniversary of The Hague Climate Agreement and reflected together on the successes and opportunities for the future.

On Tuesday May 21, the Faculty of Archaeology celebrated the end of the academic year. Traditionally, this occasion would have been marked by a BBQ. Now, for the first time, the default option was a more sustainable vegetarian Indonesian meal.

The theme of the Opening of the Academy Year on 4 September was sustainability and how the university could take the lead as a change agent. How is it going about this and what else can it do? There was also room for a critical note.

On Prinsjesdag, 16 September 2025, the Faculty of Governance and Global Affairs (FGGA) opened the new faculty year with a reception at Wijnhaven. The opening was dedicated to the university’s lustrum theme: ‘Ahead of Time’.

By looking at what is different, researchers often discover the special, the unusual. And that has already brought a wealth of highlights – also in Leiden.

They have known each other since they were small but Rianne and Tom first fell in love when working together at the university. That love culminated in a fairytale wedding amid all the revelry last 3 October.

The social sciences are vital in navigating complexities, fostering understanding and bridging divides. This was celebrated during the faculty opening of the academic year.

Floreat et crescat. Flourish and grow. That was what was wished for the Mathematical Institute at its opening. Now, the institute proudly celebrates its 70th anniversary. Time to reflect on how it all began. And importantly, how is it doing now?

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…

An evening program in the University Library and Middle Eastern Library in Leiden for everyone who has something to do with the Middle East; from Tajikistan to the Mahreb and from Istanbul to Sanaa. View the oldest books and clay tablets from the collection and listen to the most fascinating stories…