During an evacuation, gather at the greens next to the Sylvius Laboratory.

During a partial evacuation, gather in Oort restaurant. During a full evacuation, gather in the garden.

During an evacuation, all employees and students gather in front of the round 'saucer', or on the east or west side of the Gorlaeus Building. In bad weather or in case of escalation, gather at the sport centre.

Professor of Modern China Florian Schneider researches what people do with technology and what technology does with people. Social media, for example. And then mainly in China.

Working in a laboratory is different from working in an office. Some of the rules that apply when working in or around a laboratory are given below.

Leiden University has high-quality research facilities and laboratories for education and research.

Webinar, Q&A, discussion

Leiden University restores, modernises and builds for the users of its buildings in Leiden and The Hague. The building stock is very diverse: from historic buildings in the inner city to advanced laboratories at the Leiden Bio Science Park.

On this page you find an overview of tools many teachers use in their education at our faculty.

Your telephony coordinator is authorised to approve a name change or process your application for a new connection or telephone number.

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.

Leiden University offers researchers extensive facilities and support at every stage of their academic career. Here you will find more information on funding, policy, and publishing, as well as answers to questions such as: How do I arrange a PhD track? Which research grants are available? And what…

Biological agents are micro-organisms such as bacteria, parasites, moulds, viruses and their waste products. This category also includes genetically modified variants (GMOs). These agents may form a risk for your health, which is why we apply a number of legal and other guidelines to prevent people…

Regardless of whether you work at a desk or in a lab, all workplaces have their risks. As your employer, the University aims to create a healthy workplace and to limit possible health risks. Here you will find the main risks and measures that we take to reduce them.

Regardless of whether you work at a desk or in a lab, all workplaces have their risks. As your employer, the University aims to create a healthy workplace and to limit possible health risks. Here you will find the main risks and measures that we take to reduce them.

On 27 May 2025, the Executive Board decided to establish a Committee on Human Rights / Conflict Zones.

Lecturers Marjo de Graauw and Malte Riemann have both received a Comenius Teaching Fellowship.

The Sustainability Monitor 2023 shows that Leiden University is taking its sustainability efforts seriously.

LUC students research the Geul river’s restoration, combining sediment studies, biodiversity assessments, and policy insights for global environmental challenges

Museum Boerhaave commemorated the hundredth anniversary of Einstein’s Theory of General Relativity with the exhibition ‘Einstein & Friends’. The exhibition shined light on the famous physicist’s Dutch friends and his love for Leiden. A review featuring seven images can be found below.

Freezers set three degrees higher, a recycling bin for plastic petri dishes or timer switches installed on equipment: a growing number of Leiden University laboratories are taking small – but effective – steps to reduce their environmental impact, via the internationally recognized Laboratory Efficiency…

Specially for an experiment conducted by Leiden University, public administration experts and water authority officials came together in a laboratory.

The University's CO2 footprint has once again decreased. This is the conclusion of the 2022 Sustainability Report. The report also concludes that steps have been taken to integrate sustainability into Leiden University education and research.

The university campus at Leiden Bio Science Park will change rapidly over the next few years. A short film shows the transformation to a full campus. See what this mix of new university buildings, student accommodation and restaurants and cafés will look like. And sustainability and biodiversity won’t…