See Data Collection

Access to existing Datasets

It is not always necessary to collect new data for your research. More and more research data is made openly available for further research and analysis in archives or data depositories. Re-using existing datasets can save a lot of time and money. We therefore recommend you to check which datasets are already available within your research field first.

Sources for existing datasets



EASY is an electronic archiving system for research data that offers access to thousands of datasets in the humanities, social and behavioural sciences, geospatial sciences and oral history. The majority of the datasets are Open Access available.

3TU Datacentre

The depository of the 3TU Datacentre hosts datasets originating from technical and scientific research in the Netherlands.

Dutch National Data Portal

This portal provides an overview of all available datasets provided by government organisations in the Netherlands.


A big part of the data collected by CentERdata is freely available for researchers. The CentERdata database contains CentERpanel dataLISS panel dataDHS data and SHARE data. Check out these pages for more information about the terms and conditions and to gain access to these interesting datasets.


Statistics Netherlands (CBS) has made its complete database (a total of 3400 datasets) available as open data. The statistical data is now easily available and reusable. You can find the datasets at the CBS Data Portal.

Please let us know if you have any additional Data Archives, so we can add them to this overview.

Terms of use

Each data archive or depository has its own terms of use, but generally the most important aspects that should be taken into account when re-using an existing dataset are:

  • The acquired dataset is for personal use only and may not be distributed further
  • Always include an acknowledgement of sources (a bibliographic reference of the dataset)
  • Inform the archive or depository of the new publications that resulted from the dataset