Can politicians say whatever they want? What is the limit and when can the Public Prosecution Service act? PhD candidate Jip Stam examined the limits of free speech in criminal law. 'Intervening too soon can threaten democracy and the rule of law,' he warns.

Every year, an NWO PhD in the Humanities grant is awarded to a prospective PhD candidate at the Faculty of Archaeology. This year, the grant went to Maia Casna, enabling her to study respiratory disease in the past. ‘My hypothesis is that the rapid formation of cities in the medieval Netherlands, must…

Leiden University supports researchers at every stage of the publication process. Here you will find more information on copyright, Open Access, and registering research output, as well as answers to questions such as: How do I enter publications into LUCRIS? What are my rights as an author? And how…

Are you an international researcher working for Leiden University? Please note that you probably are legally obliged to take out health insurance. Here you will find if you need a public or a private health insurance, and how to apply for it.

How can you ensure that your research hits the headlines? How can you bring your research output, such as PhD research or a publication, to the attention of the public?

Through Open Access, research results from around the world are freely accessible to all. It is an incentive for exchanging and utilising knowledge and fresh insights between scientists, companies and social institutions. The Centre for Digital Scholarship at the University Library offers support with…

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.

How can you ensure that your research hits the headlines? How can you bring your research output, such as PhD research or a publication, to the attention of the public?

To help you make the impact or valorisation of your scientific research more clearly apparent, we have created a Leiden Impact Matrix.

Dr. Josien de Klerk, Associate professor in Global Public Health at Leiden University College The Hague recently published some of her work on HIV/AIDS. In collaboration with a team of interdisciplinary researchers from the Amsterdam Institute for Global Health and Development she came to the conclusion…

On 8 March, International Women’s Day, equal opportunities for women worldwide, empowerment, and gender equality take centre stage. For years, the role of women in the past has been nearly invisible. Four archaeologists reflect on this inequality of focus, from hunter-gatherers in the palaeolithic to…

If you have a question about the University website, or if you wish to post an announcement or report content-related changes, please contact the web editors of your faculty or unit.

Did you know that research and education in the field of digital innovation are key pillars of the Faculty of Governance and Global Affairs? Over the next seven days, we are organising Cyberweek on our social media channels to showcase what we have to offer.

The information on your profile page is generated by different underlying systems. You can (request to) change or delete it. Please note that it may take some time before the adjustments are shown.

All University employees and researchers have a personal profile page on the website. This page will show where you work and how you can be reached.

Images are an increasingly important part of communication, but how do you choose suitable ones for the website and where can you find them? This page offers tips on finding the right image and what to watch out for.

On 26 January, Rowie Stolk, Laura Hanrath and Marloes Noorloos spoke at the lecture ‘The Right to Demonstrate under Scrutiny’. This discussion session, part of the university lecture series Community. Conversation. Connection., was organised in response to difficult questions about the right to demo…

Leiden University works continuously to ensure a strong profile and societal visibility. On these pages, you will find more information about our strategic direction and the use of media, as well as answers to questions such as: What are our core messages? Which channel should I choose for my target…

An ORCID iD is a unique code that identifies you as a scientist in a reliable and consistent way, much like the social security number in a passport. DOI does the same but for a scientific publication instead of a person. DOI and ORCID iD are examples of persistent identifiers.

How can you ensure that your research hits the headlines? How can you bring your research output, such as PhD research or a publication, to the attention of the public?

Start thinking in advance about the selection for long-term preservation.

Leiden University supports researchers with secure digital facilities and tools. Here you will find information on data management and online collaboration, as well as answers to practical questions such as: How do I store research data securely? How do I set up an online survey? And how do I register…

The information on your profile page is generated by different underlying systems. You can (request to) change or delete it. Please note that it may take some time before the adjustments are shown.

If you have a question about the University website, or if you wish to post an announcement or report content-related changes, please contact the web editors of your faculty or unit.

Guidelines, rules and other important information for PhD candidates are described in detail in various documents.

The bachelor's programmes at the Faculty of Governance and Global Affairs, based in the city of international cooperation and politics – The Hague – prepare you for a future in governance, leadership, and diplomacy. In the administrative heart of the Netherlands, you will learn to tackle the challenges…

In The Hague, the international city of peace, justice, and security, the Faculty of Governance and Global Affairs' bachelor's programmes offer you the opportunity to learn from experts in security and crisis response. Here, you will gain the knowledge and skills to keep people, organisations, and societies…

From 16 to 23 October 2025, the Faculty of Governance and Global Affairs (FGGA) will host the second edition of Cyber Week. Following last year’s success, we will once again shine a daily spotlight on our teaching and research in the field of cybersecurity through LinkedIn and Instagram. Today’s societal…

The Netherlands have an excellent public transport system. You can get almost everywhere by train, bus or tram. All you need is an OV-chipkaart. When it comes to getting around in Leiden it might be worth to consider buying a (secondhand) bike. Do you prefer travelling by car? You will find more on…

Every year Leiden University organises a number of events where our researchers share their knowledge with an audience of all ages. We are also involved as a partner in a number of local and national events. Fancy joining in? See who to contact below.

Every faculty has its own procedures with respect to registering for courses and examinations, BSA, handing in grades, publishing timetables, etc. For more information, see your Faculty’s tab.

If we want to show the impact of our research, we can’t do so without science communication. But how do you go about communicating science? Where do you start as a science communication novice? And how do you take your communication to a higher level? On this page, you will find websites, articles,…

The academic year officially commences on 1 September and ends on 31 August. On collective closing days the university is closed and no lectures take place. The academic calendar applies to the whole university and to all study programmes with the exception of medicine.

Every year Leiden University organises a number of events where our researchers share their knowledge with an audience of all ages. We are also involved as a partner in a number of local and national events. Fancy joining in? See who to contact below.

All University employees and researchers have a personal profile page on the website. This page will show where you work and how you can be reached.

All staff members have their own profile page on the website. These pages include information about your work location and how you can be contacted. Are you looking for a colleague? Type his or her last name, first name, or first and last name in the search bar of the website.