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Most Bachelor’s programmes at Leiden University have a major-minor structure, with 15 to 30 study credits (EC) reserved for elective credits. One way to earn elective credits is by doing a minor.

Extra places as a result of corona situation

A minor is a good alternative for bachelor’s students who are unable to study abroad due to the corona situation. That's why we have more minor places available in the academic year 2021-2022. 

Follow the updates on this page.

What is a minor?

A minor is a cohesive, carefully-compiled set of courses with introductory courses followed by more in-depth study, thus allowing students who are less familiar with the topic to follow the minor. 

A minor allows you to explore subjects beyond the boundaries of your own study programme. It can offer new knowledge, insight and skills, perhaps from a completely different field of study. You can also use your minor as a way of preparing for a future Master’s programme.

The best time to do a minor is in the third year of your Bachelor’s programme. 

Minors offered

Minors in Leiden

Leiden University offers around 50 minors:

•    Minors at Leiden University

Minors at TU Delft and Erasmus University Rotterdam

Leiden University, Delft University of Technology and Erasmus University Rotterdam collaborate closely on a range of educational matters, thus making it easy to follow a minor at TU Delft or the Erasmus University. During the application period for Leiden students, in April and May, TU Delft and the Erasmus University reserve a third of their minor places for Leiden University students. Just like studying abroad and internships, following a minor elsewhere can enrich your studies, your student life and your CV.

Joint minors Leiden-Delft-Erasmus Universities

Leiden, Delft and Rotterdam also offer joint minors, taught by lecturers from the universities involved. Students from various fields of study have the opportunity to work together on a range of multidisciplinary topics.

The joint minors offered in 2021-202 are: 'African Dynamics', 'Frugal Innovation for Sustainable Global Development', 'Geo-resources for the future', 'Responsible Innovation', 'Security, Safety and Justice', Smart and Shared Cities' and 'Sustainable Chemistry and Biotechnology'.

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Admission requirements

  • You must be registered as a bachelor's student at Leiden University.
  • Your minor may not overlap with your regular studies. Are you unsure? In your study programme's Course and Examination Regulations (OER) you can read which minors you are not allowed to follow due to overlap.  
  • If you only want to follow part of a minor, you need permission from the Board of Examiners
  • For some minors there are additional admission requirements, such as a specific study programme or a selection procedure. See the Prospectus for the requirements for Leiden minors. For Delft and Rotterdam minors see the websites of TU Delft and the Erasmus University. You can find an overview of the programme requirements for minors in Delft and Rotterdam in the admission matrix for TU Delft (pdf) and the admission matrix for Erasmus (pdf)

In terms of educational level, the best time to do a minor is in the third year of your Bachelor’s programme. This is an advisory note, rather than an admission requirement.



Type of minor


Application period

Selection minors*

TU Delft, Erasmus, LDE, Leiden

1 April at 13.00 till 15 April

Minors without selection

TU Delft, Erasmus, LDE

3 May at 13.00 till 31 May



3 May till 15 July

* A selection minor is a minor with a different selection procedure. You can check which minors are selection minors in the Prospectus or on the website of TU Delft and Erasmus.


  • Every minor has a limited number of places. These are allocated on a first come, first served basis (with the exception of selection minors*). So apply on time.
  • You may only follow one minor. So only apply for one minor to ensure that your fellow students can also get a place. 
  • If you are placed on a waiting list for your first choice of minor, you can apply for a second minor.
  • You can change or cancel your applications right up to the end of the application period. 

Minors at Leiden University

  • Apply for the minor via uSis*.
  • You can find the necessary study activity code in the Prospectus.
  • Make sure to cancel your application if you decide not to follow the minor. This will allow another student to take your place.

*Exception: Students following the bachelor's programmes in Clinical Technology and Life Science & Technology must apply via Osiris.

Minors at TU Delft, Erasmus University and LDE minors

  • Apply for the minor via uSis*.
  • You can find the necessary study activity code in the admission matrix for TU Delft (pdf)/the admission matrix for Erasmus (pdf) or by searching by name in uSis (LDE minors).
  • You may only apply for one minor at TU Delft, at Erasmus University Rotterdam or a joint LDE minor. Important: although it is technically possible to submit multiple applications, all applications except your first one will be automatically cancelled when the application deadlines passes. So at that moment, make sure only your first-choice of minor is in uSis.

*Exception: Students following the bachelor's programmes in Clinical Technology and Life Science & Technology must apply via Osiris.


Do you have a question about the content of a particular minor? Get in touch with the contact person for that minor as stated in the Prospectus.

Do you have other questions? Take a look in the FAQ section. If you can't find the information you are looking for, contact the Study Line via studielijn@leidenuniv.nl or 071-527 11 11.

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