The Network Science group works on methods and algorithms for analyzing real-world (social) network data.

The Institute of Environmental Sciences (CML) at Leiden University is at the forefront of industrial ecology, environmental biology, and sustainability science.

Making an impact by creating solutions for the challenges of the future. That’s what we do through our education and research in biodiversity and sustainability, artificial intelligence, complex networks, new medicines, quantum technology, and galaxies.

Business Studies spans science, medicine, and business, focusing on areas such as technology management, innovation, entrepreneurship, operations, and decision making.

Are you graduating at the Faculty of Science? Or are you supervising a PhD student? At the Graduate School of Science you find support at every phase of your PhD.

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

Data Science (DS) and Artificial Intelligence (AI) are omni-present and have the potential to be incorporated in various fields. However, in order to live up to this expectation, a good understanding of the techniques, their implications and limitations is required. In this minor you develop insights…

At Leiden University’s Faculty of Social and Behavioural Sciences we keep in touch with our alumni in various ways.

How can we track biodiversity loss at the speed and scale needed to protect our ecosystems? The eDNA Citizen Science project combines cutting-edge environmental DNA technology with citizen science to enable residents, community groups, and local organizations to monitor aquatic and terrestrial biodiversity…

This year Leiden University exists for 444 years! This will be celebrated together with the residents of Leiden and The Hague during various activities. One of these is scientists and residents doing research on plastics and psychology together.

Political science is a broad study with a lot of depth. You study political issues at local, national and international level, from different perspectives. At the start of your studies, you can choose from two directions: Nationale en Internationale Politiek or International Relations and Organisations.…

The Biomedical Sciences Health specialisation aims to provide you with a theoretical background and academic competences in multidisciplinary research in Biomedical Sciences and in clinical practice in Medicine. Since the programme is partly taught in English and partly in Dutch, fluency in Dutch is…

Our research in the area of safety sciences aims to increase the mechanistic understanding of cellular toxicity of drugs and, in a broader sense, chemicals.

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

From black holes to artificial intelligence and from drug research to data science: welcome to the fascinating world of the Faculty of Science. Our researchers, students and guests regularly give public lectures about their work. You are welcome to attend.

In the Biomedical Sciences Education specialisation you gain knowledge and skills in the area of teaching in biology. The education specialisation is for students who want to work as a first-grade teacher Biology at secondary education or for those who want to specialize in education in general. Since…

Scientific research is the main focus of our program. We expect new students to understand what it is and how it works.

The Leiden Science Run is a 5 km charity run at the Bio Science Park Leiden. It is a relay race organized by Leiden University in collaboration with the University Sports Centre.

Met de bachelorspecialisatie Informatica & Economie aan de Universiteit Leiden leer je waardevolle inzichten in de economie te combineren met (programmeer)vaardigheden en kennis uit de informatica.

Research

Health research, medical practice and consequently the whole population is increasingly affected by digitization, data science and AI.

Quantum Information Science & Technology is a new joint degree master programme by Leiden University and TU Delft. Below you can find a video of the campus of the Science Faculty of Leiden University where a part of the lectures will take place. A video about the programme's content and structure…

During the Leiden Science Family Day, you will visit places that are normally closed to the public: go backstage at the Faculty of Science!

The Biomedical Sciences research specialisation aims to provide you with a theoretical background and academic competences in multidisciplinary research in Biomedical Sciences. The entire programme is taught in English.

YAL raises its voice on policy matters.

On March 16th, students from all over the world visited Leiden's Humanities Faculty to explore their options during the Master's Open Day. 'Leiden is a beautiful city, I feel like I could definitely study here.'

Archaeological Science at Leiden University is an MSc specialisation that delves into the specifics of archaeological methods and techniques. The combination of hands-on field experience and laboratory work offers a challenging and rewarding research environment.

The Faculty of Social and Behavioural Sciences (FSW) aims to play a leading role in gaining insights on current developments in society.

Developing and investigating statistical methods for complex data and models

Are you thinking about studying Statistics and Data Science? Learn more and watch the introduction video.

Are you thinking about studying Life Science and Technology? Learn more and watch the introduction video.

Are you thinking about studying Bio-Pharmaceutical Sciences? Learn more and watch the videos.

What can languages spoken in the Lesser Sunda Islands today tell us about the histories of its various population groups?

Choice is at the very heart of politics. War or peace, left or right, liberty or security, sovereignty or integration, consensus or conflict—choices matter. Choice is also key to your education. Choose an intellectually challenging programme in which you develop your knowledge and expertise in the study…

Historiography of science is in its current self-image a non-evaluative discipline. Its main goal is to understand past processes of knowledge formation on their own terms. In the last few decades this approach has greatly improved our understanding of the phenomenon of science. Yet, something strange…

Chemistry is all around us: from nutrition and smartphones to medicine. The field is developing rapidly, as the world population continues to grow and resources become scarce. MST will educate you on the basics of working towards a clean and healthy world.

Knowledge and culture subproject 3:

By carrying out fundamental research and providing excellent education, universities become a breeding ground for innovation and entrepreneurship.

Scientists, including our faculty colleague Dr. Mike Field, studying an exceptionally well-preserved woolly rhinoceros have revealed details of what Britain's environment was like 42,000 years ago. The beast's remains were discovered in Staffordshire in 2002, buried alongside other preserved organisms…

Since criticising the war in Ukraine, Russian author and cardiologist Maxim Osipov has fled Russia. Come September, he will be Leiden University’s writer in residence and teach a course on Russian literature.

Each month, we publish an article showcasing how social science research and education contribute to solving societal challenges. Researchers, lecturers, students, and societal partners work together to make knowledge accessible and to make a difference. Through open science and engaged education, we…

Every year, the Leiden Institute of Physics (LION) organises the Science Day. The goal is to highlight the newest research at LION, to socialise, and to welcome first year master students and new PhD's and Postdocs to our institute.

First set up in 2015, the Language Learner Corpus (LLC) project collected language data of over 150 language students. We have now launched new communicative tasks to collect longitudinal data of language learners at Leiden University.

During the second Arthur Docters van Leeuwen Lecture on 2 December, AIVD Director Erik Akerboom underlined how the changing threat landscape demands reflective leadership, transparency where possible and close cooperation to protect the democratic legal order.