Smiling faces, sweltering heat and a record-breaking donation – that was the Leiden Science Run 2025. On Saturday 21 June, the Leiden Bio Science Park turned bright orange as enthusiastic runners completed 4.5 kilometres to support research for vulnerable children.

Water is all around us and is vital for all aspects of life. Studying the various compounds and life forms that inhabit natural waters lets us better understand the world around us.

June 23rd was the annual Science meets Business & SBB barbecue. The event offered brilliant opportunities for SBB alumni to meet companies for internships, job openings and networking, or to just reunite with old friends.

By comparing individual health data with population data, doctors can provide personalized health advice and patients can learn from each other's experiences. Wessel Kraaij, professor of Applied Data Analytics shows how personal data can have predictive value.

The role of religion in the identity construction of LGBTQIA+ folks

Some examples of AI-research done at Leiden.

The master’s programme of Latin American Studies offered by Leiden University supports the teaching and research of the social, cultural, historical, and linguistic diversity of contemporary Latin America, a region of mind-blowing diversity and global impact.

Leiden University offers ambitious students the opportunity to gain state-of-the-art knowledge, coupled with the freedom to develop their own area of expertise.

This PhD project investigates how language models can be used to extract structured knowledge from text in a way that is accurate, robust, and applicable to real-world use cases.

The Leiden University Graduate School of Humanities promotes the quality of our PhD candidates' selection, supervision, assessment, and training. Together with the Faculty institutes, the Graduate School of Humanities provides the organisational infrastructure within which PhD candidates participate…

You've earned your degree and you’re ready to start your career. But where do you end up?

This research cluster explores processes of cultural creation, reception and transformation within a wide range of societal contexts from the early Middle Ages until c. 1800.

Psycholinguistic research

The Leiden University Centre for Digital Humanities regularly offers events and workshops related to all aspects of digital humanities. Events are aimed at connecting scholars from across Leiden's Faculties with a research interest in all digital aspects of their chosen subject area.

Would you like to develop further and be challenged academically in your field or beyond? The Faculty of Humanities offers a wide range of courses to boost your career, learn new skills or broaden your knowledge.

Your time at Leiden is about more than just studying. Some of your best experiences will stem from being a part of our lively and diverse student community, as well as from life in the beautiful city of Leiden.

Do you want to know more about the Bachelor of Linguistics, and experience what it’s like to study in Leiden? Leiden University offers you a variety of introductory activities to help you with your choice of study:

Conducting research on reliability of journalism and the trust in media.

Towards an international orientation in the field.

Below, you can find the answers to frequently asked questions about the Summer School.

Lecture, CHiLL series

The future of Europe as a community of democratic states is deeply uncertain. The European Union, founded to promote ‘ever closer’ integration, aims nominally for peaceful, prosperous cooperation. But this ideal has been battered by a series of bruising crises, and now by war.

The Oxford Handbook of Dutch Politics provides a comprehensive longitudinal overview of the state of the art of academic research on the Dutch political system: its origins and historical development, its key institutions, main fault lines, pivotal processes, and key public policy dynamics. In each…

Lecture, Natuurwetenschappelijk Gezelschap Leiden

Computers are increasingly able to accomplish tasks that are difficult for human experts, such as diagnosing diseases or detecting credit card fraud. While the earliest examples of computational thinking can be traced back to the 13th century, according to Holger Hoos, Leiden Professor of Machine Learning,…

What’s it like to study a certain programme within the Faculty of Humanities at Leiden University? These prospective students found out during the Experience Day on Friday 6 April. They had a taste of the faculty’s atmosphere and discovered what study programmes are actually about.

Luuk van Middelaar and Vestert Borger, both affiliated with the Europa Institute of Leiden University, are conducting a research project that is financed by the Statesman Thorbecke Fund Programme of the Royal Netherlands Academy of Arts and Sciences (KNAW). The aim of the fund is to promote knowledge…

The League of European Research Universities (LERU) is a group of 24 leading European research universities.

This centre brings together the research of the members of the Institute of Philosophy and affiliated academics whose work focuses on the history of philosophy broadly conceived. Research interests range from ancient to near-contemporary philosophy in various regions of the world, and cover all subdisciplines…

With a master’s degree in Astronomy you are well prepared for jobs in research, industry and the public sector, including technological, financial and consultancy companies, research institutes, governments and science communication organisations.

With a master’s degree in Astronomy you are well prepared for jobs in research, industry and the public sector, including technological, financial and consultancy companies, research institutes, governments and science communication organizations.

Leiden University offers you several services related to career orientation and job application skills.

Get to know us through our online and in-person events for prospective students!

One of the core missions of CWTS is to contribute to a sustainable science system. Through our services, we do so by providing high-quality support for research evaluation, research management, and science policy.

Leiden University offers you several services related to career orientation and job application skills.

Leiden University Graduate School of Teaching

The experimental approach of science applied to artistic research

Peter Flach is Professor of Artificial Intelligence at the University of Bristol. An internationally leading scholar in the evaluation and improvement of machine learning models using ROC analysis and calibration, he has also published on mining highly structured data, on knowledge-driven and explainable…