From where litter ends up to which languages are spoken in Leiden and The Hague: over 50 interesting, surprising, complex and entertaining questions were sent in for the Citizen Science project to mark our 444th anniversary. Not one but two Citizen Science projects will be starting this year in Leiden…

On this page you find all the ways through which the Institute of Psychology aims to foster Open Science.

Citizen science has recently become a widely used term, but what does it mean exactly? How does citizen science compare to crowdsourcing? And where does community archaeology stand in this discussion?

Below you will find an overview of all PRE-Classes provided by the various programmes of Leiden University. For each section, you can find a description of the content and more specific information about the requirements for participation in the Class.

The majority of scientists, from archaeologists through to zoologists, collect enormous volumes of data. Their massive databases contain large amounts of information which is difficult for humans to filter. With a solid grounding in statistics and computer science, we can develop algorithms for analyzing…

The Institute of Political Science is a vibrant department with nearly 70 academic staff in Leiden and nearby The Hague.

Are you thinking about studying Biomedical Sciences? Learn more and watch a short promo video.

Computational thinking, programming, and algorithms form the basic of many of the things that are shaping our world, the way we work, interact, organize ourselves, and even spend our free time with social networks, streaming media, and games. And this transformation is far from being complete, it is…

BE-OPEN is a structural project funded under the Erasmus+ Capacity Building in Higher Education action. The project is coordinated by the University of Novi Sad, Serbia. The main objective of the project is to develop conditions for the implementation of the core principles of Open Science at universities…

Are you thinking about studying Political Science? Watch the introduction video’s and learn more!

We perform multidisciplinary research at molecular, cellular, and organismal levels of animal biology to increase fundamental understanding of health and disease.

The majority of scientists, from archaeologists through to zoologists, collect huge volumes of data. Their massive databases contain large amounts of information which is difficult for humans to filter. With a solid grounding in statistics, we can develop algorithms for analysing and identifying patterns…

Are you thinking about studying Computer Science? Learn more and watch the videos. Note: As of September 2025 you can also combine this master programme with the Business Studies specialisation.

In Microbial Sciences, we perform multidisciplinary research to understand the structure and function of microbes at all levels of biological organization, from small molecules and cellular structures at atomic resolution to multicellular communities.

On Sustainable Tuesday, two weeks before Dutch Budget Day, the Dutch cabinet receives a suitcase full of sustainable ideas and initiatives. The initiators' aim: to make the government plans for the upcoming year a little more sustainable. At the Leiden Institute of Environmental Sciences (CML), assistant…

Leiden University will be recording a brand-new series of podcasts in 2019: Science Shots. Our top scientists will talk about their research in less than 15 minutes. Tip: something to enjoy on the train journey between Leiden and The Hague, our two University cities!

The Department of Archaeological Sciences seeks to achieve the highest standards of excellence in science-driven education and archaeological research across the globe and across all periods.

The mission of the Plant Sciences cluster is to contribute to the sustainable production of high-quality crops, flowers and high-value bio-based products, and to contribute to the maintenance and restoration of biodiversity in natural ecosystems. This is realised by generating fundamental knowledge…

PhD candidates carry out a programme of independent research and additional (limited) course work, culminating in production of a PhD thesis in typically 4 years.

The master’s specialisation Bio-Pharmaceutical Sciences and Science Communication & Society at Leiden University is a two-year programme which combines research training in chemistry with one in techniques of communication.

Languages of The Hague is a collection of columns on languages and language which were published between 2016 and 2018 in the weekly newspaper Den Haag Centraal.

Research combining a conceptual and practical perspective within the field of teaching and learning second languages.

At the Institute of Political Science we value our alumni. We can learn from you, and would like to contribute to your further development. And, of course, we want to lend a hand in connecting ‘our’ political scientists all over the world.

With the emergence of new methods and technologies such as improved DNA analysis and big data, archaeological research has changed radically in recent decades. The researchers from the Department of Archaeological Sciences at the Faculty of Archaeology use new scientific knowledge to answer fundamental…

PhD candidates carry out a programme of independent research, leading to a PhD thesis in typically 4 years.

PhD candidates carry out a programme of independent research and additional (limited) course work, culminating in production of a PhD thesis in typically 4 years.

Gorlaeus Gebouw, Einsteinweg 55, 2333 CC, Leiden

In films kunnen de meest wonderlijke acties plaatsvinden. Maar zijn die acties in de 'echte' wereld ook mogelijk? En in hoeverre houden filmmakers ons voor de gek? Tijdens het Leiden International Film Festival komen film en wetenschap samen.

The two-year master’s programme in Computer Science at Leiden University offers seven specialisations ranging from AI to Bioinformatics and Data Science. The programme combines excellent theoretical teaching with possibilities for applied work with industrial relevance.

Social Science Matters is an online variant on London’s famous Speakers’ Corner – a platform for the researchers in the various disciplines in the Faculty of Social and Behavioural Sciences to react to the news. This soapbox gives our social scientists an opportunity to voice their opinions on current…

Politics is about the authorised allocation of values: who gets what, when and how much? This question is relevant at many different levels, in many different places and in very different ways.

How to facilitate the translation of science into innovation

The Open Science Lab bundles expertise on Open Science at CWTS and contributes to and studies the transition towards Open Science at CWTS, Leiden University, and beyond. It serves as a knowledge broker, facilitator, and platform for learning and exchange.

Are you a researcher eager to share your work with a broader audience? Do you want to develop your science communication skills and learn how to engage effectively with society? Then join our Summer School Science Communication in Leiden! Jointly organized annually by the Faculties of Science and Social…

The Biomedical Sciences Communication specialisation focuses on the interaction between science and society and concerns science communication in a broad sense. You combine your research training with different aspects of science communication. The entire programme is taught in English.

The Citizen Science Lab is a transdisciplinary expertise centre that brings together scientists, policy makers, citizens and other societal stakeholders in participatory research initiatives that produce new knowledge, address scientific questions of relevance to society, and provide data and insights…

The research group Science Communication and Society aims to understand how science communication works to improve the interaction between science and society. Central themes are ‘Bridging the gap between experts and the general public’ and ‘Evaluating Science Communication’.

The research group Science Communication and Society has been physically within the Institute of Biology (IBL) since 2012 and has become a formal part of the institute in 2018. The mission of this group is understanding how science communication works to improve the interaction between science and s…

The Data Science Research Programme aims to advance the state of the art in Data Science research and to accelerate the use of Data Science methods at all faculties of Leiden University.

In citizen science projects, citizens and scientists work together to develop new scientific knowledge.

Improved molecular knowledge of the mechanisms of processes in the cell can lead to better medicines and new or advanced methods for combating diseases. Our MSc students in Life Science and Technology (LST) specifically learn to understand the molecular and structural chemical and biological aspects…

Leiden University's Citizen Science Lab supports and organizes initiatives where anyone can get started with scientific data and research. This is how we enrich research with insights from the community, make science accessible to all, and tackle important local issues together.

At Leiden Bio Science Park (LBSP) Leiden University works together with the business community, the LUMC and the Municipality of Leiden.

Do you like running? Then take part in the Leiden Science Run on The Leiden Science Run is a 4.44 km charity run at the Leiden Bio Science Park on 28 september 2019. In 2019 Leiden University will be 444 years old. This special birthday calls for a special celebration. That is why we have adjusted the…

Leiden University was taking part in the Weekend of Science in The Hague!

The aims of research and teaching within the Educational Sciences programme are to understand in how individuals develop and learn and to optimize education for all individuals.

Curiosity and a passion for science - that’s what connects the people of FWN. Our Faculty is international and diverse, and together we create a great place to work. On this site, we celebrate our community by highlighting the nominees and winners of our Faculty Awards. Explore their stories and get…