On the university’s birthday, professors teach a class of 10 and 11-year-olds during Meet the Professor. The professors were bombarded with questions.

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…

ICT

Organisation

How do our researchers and support professionals work together to ensure that groundbreaking innovations from the lab are given a place in society? Professor Huub de Groot and business developer Serkan Esiner share their experiences on collaborating within an EU-funded project that focuses on converting…

What are you supposed to do if something goes or has gone wrong? Whether it be a break-in, an accident or an unsafe situation of any other kind, or data breach or cyber-attack; please read how to report each type of incident below.

What are you supposed to do if something goes or has gone wrong? Whether it be a break-in, an accident or an unsafe situation of any other kind, or a data breach or a cyber-attack; please read how to report each type of incident below.

Leiden University has awarded its prestigious University Medal to Emeritus Professor Lex van der Eb. As a pioneer in genetics and molecular biology, he received this honour for his services to science and his key role in the development of the Leiden Bio Science Park (LBSP).

Within the scope of Leiden European City of Science, the Royal Netherlands Academy of Arts and Sciences (KNAW) presented the quadrennial Lorentz Medal to Daan Frenkel in the Academy Building yesterday. The ceremony was in collaboration with the Lorentz Center and was attended by Robbert Dijkgraaf, Minister…

Are you working with film, photo, sounds, creative coding, drawings or other unconventional method in the social sciences and humanities? ReCNTR has a new 2-year multimodal seminar. Check it out and apply by November 15th!

Research

Security

Freezers set three degrees higher, a recycling bin for plastic petri dishes or timer switches installed on equipment: a growing number of Leiden University laboratories are taking small – but effective – steps to reduce their environmental impact, via the internationally recognized Laboratory Efficiency…

Op zaterdag 3 juni vindt de Museumnacht Leiden plaats. Ook dit jaar zijn Leidse wetenschappers en studenten onderdeel van de programmering.

Researchers from Leiden have developed a promising TB vaccine that users can self-administer via a special patch. This could be beneficial for countries with limited health services, says PhD candidate Malene Neustrup.

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

AI has applications in all kinds of fields. Would you like to organise an event on the possibilities of AI in your research field? The Leiden interdisciplinary research programme SAILS offers you experts on content, money and other support.

On 4 May, Leiden University remembered the victims of the Second World War from our university community. Alumni, students and present and former staff of the University came together for this Hour of Remembrance.

As the end of the year approaches, the new University Sports Centre (USC) building is nearing completion. Vice-President of the Executive Board Timo Kos visited the USC, which celebrates its 55th anniversary this year, to see how work is progressing.

From health to migration to climate: 25 interdisciplinary research and education initiatives received a Kiem grant in 2024.

Although there is considerable evidence that nature in the city is beneficial to both people and animals, we still do not have an overall picture of those benefits. To rectify that, a Leiden PhD candidate and a student – armed with a cargo bike – are using The Hague as a life-size laboratory.

Veelgestelde vragen privacy en security

When the PhD research has been completed and the dissertation is (nearly) finished, there are several more steps to take before you can defend it. For example, you must submit your manuscript and make preparations for the PhD defence ceremony.

There are many tributaries to Rosalin Kuiper’s story and they all lead to the sea. The 28-year-old sailor was one of the five-person Team Malizia in the world’s most prestigious sailing competition: the Ocean Race.

Like many others, Ruurd Halbertsma has had a rollercoaster of a year. His museum, the National Museum of Antiquities (RMO), was closed for a long while because of the lockdown. Visitor numbers picked up again from September, but it the next few weeks will be tense now the hospitals are full again. Halbertsma:…

The Executive Board is visiting the university’s institutes to find out what is going on. On 8 July 2025, it was the turn of the Institute of Environmental Sciences (CML), one of the fastest-growing institutes at Leiden University. ‘Our main aim is to preserve our planet for future generations.’

Some thirty Leiden students balanced on SUP boards for the Supping for Sustainability Lustrum activity. Together with alumnus Merijn Tinga, better known as the Plastic Soup Surfer, they paddled their boards through the Leiden canals and waterways, fishing plastic waste out of the water.

A memorial stone honouring professor and resistance hero Ben Telders was unveiled on 12 September at the site of the former concentration camp Bergen-Belsen.

Why is the sky blue? Why are most people right-handed? Why are spiderwebs so strong? These are just some of the questions arriving at Postbus 71, a Leiden2022 project where everyone can ask their questions. Friso de Hartog, the driving force behind Postbus 71, is busy answering as many questions as…

On Thursday, May 16, Leiden University Libraries is organizing a workshop on early photography of the Middle East. In the workshop, curator Maartje van den Heuvel shows photos of three adventurous Dutch nineteenth-century travel and photography pioneers. They created beautiful photos and photo albums…

Leiden University has six top bachelor's programmes according to Keuzigids universiteiten 2025, a consumer guide to university programmes. This puts Leiden in fourth place of the broad-based universities.

Suddenly there they were, the Russian soldiers near the border of Ukraine. Since then, reports of tensions between Russia on the one hand and the United States and Europe on the other have dominated the news. What is going on? An interview with Russia expert André Gerrits.

Het schilderij van Rein Dool waarop voormalig bestuurders van de Universiteit Leiden zijn afgebeeld, is verhuisd naar de Receptieruimte van het Academiegebouw.

Lecture

Lecture

Buurtlab 070 is a new Leiden University project in which residents, researchers and students from The Hague work together on climate, sustainability and biodiversity solutions. What do they expect of the lab?

Meet-up and drinks

What will it be like to study at Leiden University in 2075? Ten surprising, artistic uni-visions could be brought to life. It’s up to you to vote for your favourite.

It often takes longer for women with heart problems to get the right diagnosis. In her Annie Romein-Verschoor Lecture, Professor Hester den Ruijter will talk about how hormones influence the heart and the importance of medical research that focuses specifically on women.