An international team of researchers led by Alice Booth (Leiden University, the Netherlands) have discovered methanol in the warm part of a planet-forming disk. The methanol cannot have been produced there and must have originated in the cold gas clouds from which the star and the disk formed. Thus,…

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On 22 June, Anneke Koning defended the thesis 'Return to sender: a multi-method study of guardianship against transnational sexual exploitation of children'. The doctoral research was supervised by Joanne van der Leun, Masja van Meeteren and Johan van Wilsem.

The International Institute of Air and Space Law is one of the leading international academic research and teaching institutes in the world, specialising in legal and policy issues regarding aviation and space activities in the broadest sense of the word.

Leiden University regularly welcomes members of the Royal Family to attend opening ceremonies, lectures, presentations and unveilings of works of art.

The CMCB brings together microbial cell biology expertise in Leiden. It aims at optimal resonance between the groups and maximal exploitation of the available infrastructure and to develop innovative cross-boundary technology platforms.

C.R. Hermans (2012). Facsimile-editie van Noordbrabants Oudheden aangevuld met enkele Archeologische Mengelwerken.

The photo exhibition offers a unique glimpse into the research being carried out at Leiden University in The Hague. It features eight researchers connected by one common thread: their research has a real impact on the city and the people of The Hague.

On Friday 28 November, Leiden University celebrated its broad pallet of research and education at a unique anniversary event. We took collaboration between fields of science, and between researchers and society, one step further.

Refugees’ effect on domestic terrorism is conditioned by host-country social perception (attitude about living next-door to foreigners) and economic competition. These hypotheses are tested cross-nationally from 1995-2014 leveraging data from the World Values Survey.

Leiden University opened its doors in 1575 – the very first university in the Netherlands. The law faculty was involved from the start and so in 2025 we, too, celebrated our 450th anniversary.

Alumni event, Brussels

The NVIC library is a public, academic reference library. Entrance is free—no membership needed—and offers access to our book collection and two reading rooms, which have a WiFi connection. It is not possible to borrow books from our library.

The Leiden University Academy of Creative and Performing Arts will be proudly awarding an Honorary Doctorate within the upcoming 440th Dies Natalis.

Alumni event, Brussels

Festival

Symposium

Academic ceremony

Festival

Inviting a navy officer to talk about piracy, inspiring critical thinking and offering to help with finding internships. Students appreciate that and therefore nominated Anita van Dissel, who teaches Maritime History, for the Lecturer of the Year Award.

2024 has been an eventful year, and this is reflected in our social media posts. An overview of the most liked, most shared or most impressive posts.

Hoogleraar Law & Society Maartje van der Woude is door de Universitas Indonesia in Jakarta gevraagd om een lezing te geven ter gelegenheid van de 96e dies natalis van de Indonesische universiteit.

Universiteit Leiden stond niet altijd bekend als een bolwerk van vrijheid, betoogt Egbert Koops in zijn diesoratie. Leidsch Dagblad sprak met de hoogleraar rechtsgeschiedenis over academische vrijheid: ‘Het bolwerk van vrijheid moest veroverd worden.’

Museum Boerhaave amplifies its collection with original letters and pictures from Einstein and Lorentz. Professor by special appointment Dirk van Delft, also director of Boerhaave, accepted the documents on 12 March.

Conference

Conference

During the Dies Natalis for alumni, February 11 2017, the annual university thesis awards ceremony was held. The winner of 2017 is Erik Kroon, of the Faculty of Archaeology. His thesis featured innovative research on changes in the technology of Neolithic ceramics.

The relationship between States and foreign corporations are regulated by international economic law and international investment law in particular. Any disputes between States and foreign corporations must therefore also be solved by reference to this body of public international law, for example when…

Learn all about the writing systems used in the famous wall poems of the city of Leiden.

From the largest numbers to the smallest molecules and from the oldest galaxies up to the latest algorithms, explore our standout discoveries and most inspiring collaborations from the past year!

Conference

Since 2000 the Leiden Student Council (LSR) yearly awards a prize for the best teacher of the university at the Dies Natalis.

You can't have missed it: Leiden University celebrated its 444th anniversary in 2019 with a year-long programme of activities for the people of Leiden and The Hague. The Dies Natalis on 7 February 2020 marks the end of this special year. High time to look back at what we did!

On 8 February 2016 prof. Jennifer Chayes received her Honorary Doctorate at Leiden University as part of the 441e Dies Natalis. A video registration of this special event has now been published. For the ceremony of Jennifer Chayes’ Honorary Doctorate, please scroll to the 82th minute.

Why, then, do governments choose to disclose intelligence and what factors shape how they do so?

The Digital Archaeology research group manages two computer laboratories with different purposes: the teaching lab (F1.01) and the research lab (A1.13a).

The objective of this project is to show how teacher research can encourage teachers’ learning process as professionals, improve teaching practices and generate knowledge about these practices.

On 12 January 2022, Mirjam Franke defended the thesis 'Over de grens van de onrechtmatige daad'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. J.H. Crijns.