The article deals with the influence of the Agreement on the Free Movement of Persons between Switzerland and the EU on the international tax separation, more specifically on the tax separation of tax deductions for natural persons.

In May 2024, ahead of the European elections, Professor Wolff spoke to 135 pupils from the European Primary School The Hague about Democracy, Europe and the European elections.

On Monday, 18 January 2016 the Grotius Centre for International Legal Studies hosted a roundtable on the practice, process, strategy and impact of the amicus curiae in international criminal trials.

Concrete Islands in Alphaville A Photo Gallery of Responses to two Seminal Artistic Explorations of Urban Technocracy and its Monstrous Highways

On Tuesday November 25, 2025, Prof. dr. Sarah Cramsey traveled with students from her masters seminar on “New Approached to the Holocaust in Central and Eastern Europe” taught at the History Institute to Amsterdam for a unique opportunity. There, Ms. Lotte Sophie Groenendijk, an alum of the History…

On Tuesday, December 9 2025, Prof. Koen Ottenheyn delivered the last Austria Centre lunch talk of 2025. Prof. Ottenheyn serves as a professor of architectural history at Utrecht University, The Netherlands, and is a member of the Royal Dutch Academy of Sciences and the Academic Curatorium which advises…

A delegation from Leiden University will be visiting Mexico from 21 to 25 October. The visit aims to strengthen the ties between Mexican universities and Leiden University.

From sleep problems to suicide attempts: the consequences of bullying can be very serious. The National Day against Bullying (in the Netherlands 19 April) is the opportunity for Leiden psychologist Mitch van Geel to share some recent insights from his research.

On 16 May 2022, Professor Michel Wouters from the Department of Biomedical Data Sciences at the Leiden University Medical Centre (LUMC), will deliver his inaugural lecture titled ‘Quality of Cancer Care: why the real world matters’. Wouters will use the opportunity to describe how quality registries…

Brain scans, heart attacks and credit scores: many science applications revolve around data. But how do you mine applicable insights from a mountain of data? In a Bachelor Honours Class, students discover how data science can contribute to their discipline.

Researchers from Leiden Law School and the LUMC have received a grant for a joint research project. They will be looking into ways in which caregivers and patients can work together to come to a better decision.

Leiden University is publishing a list giving an overview of its research collaborations with the fossil fuel industry.

In the context of the 2021 Day of General Discussion of the UN Committee on Rights of the Child, this time dedicated to alternative care, Defence for Children in collaboration with Leiden University has contributed with a paper on the 2019 Dutch Inquiry Committee on Historical Child Abuse in Alternative…

Leiden University is an internationally oriented Dutch university, where we communicate with one another in both Dutch and English. To ensure that we handle this bilingual convention with due care, the Executive Board has established a set of guidelines on language policy. These guidelines set out the…

Eight major scientific consortia are to receive research investment funding from the Netherlands Organisation for Scientific Research (NWO. Leiden University is involved in all these project and is the lead applicant for four of the awards.

It was Leiden University Academy Week from 11 to 15 March. With over 300 sign-ups and a programme with 14 different webinars and workshops on our courses for professions, this edition was once again a resounding success.

According to the LUMC, patients experience 30% fewer serious side effects when medication doses are tailored to their DNA.

Free online course

On 22 January, a panel of international experts on nuclear deterrence gathered at the Campus The Hague to discuss the future of nuclear deterrence in Europe. The panel addressed key aspects of nuclear strategy and the impact of Russia's nuclear rhetoric in the context of the war in Ukraine.

The project Going Dutch investigates why the link between being or becoming Dutch, and knowledge of Standard Dutch is so often taken for granted in public discourse, by diving into its historical roots.

In 2024, many of our students and staff won great prizes and secured important research grants.

Strategic direction of the Europe Hub lies with a Steering Committee, composed of members from several Leiden University faculties.

Get your stay in Leiden or The Hague off to the best possible start by registering for an introduction week.

Why did 'character', 'habit', and 'virtue' serve as key terms in late 19th and early 20th-century scholarly correspondences, biographies, and obituaries? Why did scholars around 1900 display so much interest in the working habits and character traits of what they called the 'scholarly self'?

From 14 to 29 PhD candidates, seven actively involved faculties and, above all, lots of innovative interdisciplinary research, all with data science as the common denominator. The university’s Data Science Research Programme (DSO) has proven so successful that after five years on a start-up grant it…