With an MSc in Mathematics from Leiden, doors open worldwide. You’ll graduate with a solid theoretical foundation, strong problem-solving skills, and experience working in an international environment. Each track concludes with an individual research project and master’s thesis, an excellent preparation…

The KLM Urban Trail Series is a hugely popular series of running trails in the Netherlands that are a unique way to explore a city centre. This year Wijnhaven is opening its doors to the runners. Join in with the fourth edition of the KLM Urban Trail in The Hague on Sunday 7 July.

Aetiologies seem to gratify the human desire to understand the origin of a phenomenon. However, as this book demonstrates, aetiologies do not exclusively explore origins.

As a part of NVIC's film & lecture program, you can join a public film screening on Sundays at 6:30 pm, and a lecture on Thursdays at 6 pm. Seats are limited and we work on a first-come, first-serve basis. Our doors open 30 minutes in advance, and close 15 minutes after starting time or earlier in case…

The Algebra, Geometry and Number Theory specialisation offers excellent preparation for a career in research and is a strong foundation for pursuing a PhD. At the same time, the skills you develop open doors to diverse career opportunities outside academia.

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 they, too, were celebrating their 450th anniversary.

Our solar system probably evolved in the same way as most of the other planetary systems around us. This has been shown by German-Austrian-Dutch research on more than 870 planet-forming disks in the Orion cloud A. The five researchers, including three from the Leiden Observatory, published their findings…

Wim Voermans, Professor of Constitutional and Administrative law, travelled to São Paolo, Brasilia and Rio de Janeiro from 14 to 18 March with a delegation from Leiden University with the aim of strengthening ties with Brazil. During the visit agreements were made on future academic collaboration and…

The fact that a significant number of seats in the Dutch provincial councils are now occupied by members of the Dutch Farmer-Citizen Movement (BoerBurgerBeweging, BBB) who have an agricultural background need not lead to conflicts of interest when voting on, for example, nitrogen emissions. This is…

Study information

In 2014 Hans-Martien ten Napel received a Research Fellowship in Legal Studies at the Center of Theological Inquiry in Princeton, NJ. The book he wrote as a result of this fellowship was published last week by Routledge Law.

A team of Leiden astronomers has managed to calculate the first 100 million years of the history of the Oort cloud in its entirety. Until now, only parts of the history had been studied separately. The cloud, with roughly 100 billion comet-like objects, forms an enormous shell at the edge of our solar…

Pupils and students learn best if they are actively doing something with the material. Professor Wilfried Admiraal is studying the best teaching methods and assignments to achieve this.

Aan de hand van bekende en minder bekende voorbeelden uit de wereld van politiek en media laat dit boek zien hoe je strategisch gebruik én misbruik kunt maken van taal.

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Schatten uit het oude Armenië

, Sandifortdreef 21, 2333 ZB, Leiden

The Phantom of the Ego is the first comparative study that shows how the modernist account of the unconscious anticipates contemporary discoveries about the importance of mimesis in the formation of subjectivity.

This book focuses on the element of thresholds – makeshift gates, makeshift structures and house doors – as concepts of liminality in ancient Near Eastern magical rituals, and the idea of transformation they reflect.

AI Labs are collaborations of Leiden University with external parties such as industry, governmental parties and other universities on the topic of Artificial Intelligence. The Science institutes of Leiden University are unique located in the largest Bioscience Park of the Netherlands, next door to…

The starting hypothesis of the project is that secrecy is not always inimical to democratic governance as conventional wisdom has it.

Vandaag de dag liggen statistische methodes aan de grondslag van beslissingen in allerlei facetten van het leven, van de gezondheidszorg en agricultuur tot de financiële sector en marketing.

In 1940 the Germany occupiers ordered the dismissal of all Jewish staff of the university. This resulted in protest speeches by fellow academics.

On 12 April 2022 Alok Oak successfully defended a doctoral thesis and graduated.

This lecture will be hosted on Thursday, 5 February 2026 at 6:00 pm.

Lecture and panel

This lecture has been cancelled.

Alumni event, Brussels

Lecture, Comparative Indo-European Linguistics (CIEL) Seminars

Lecture

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,…

Every year, more than three thousand businesses are declared insolvent in the Netherlands. The purpose of bankruptcy is to divide the assets of these companies among the creditors. However, the value of the claims of the creditors often exceed the value of the assets of the company

Policy studies and interventions in the field of Youth

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Training and Exercising in Crisis management and Emergency Control

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.