CERN Open Data Terms of Use

The CERN Open Data Portal is offered by CERN as part of its mission to publish the results of its experimental and theoretical work.

Use of the CERN Open Data Portal service denotes agreement with the following terms:

  1. The CERN Open Data Portal is provided free of charge.
  2. All metadata and datasets in the CERN Open Data Portal are made available under the terms of the CC0 waiver.
  3. All other content is made available under its applicable license conditions as specified on the relevant web pages. For example, software packages are usually licensed under GNU General Public License (GPL). Download and use of such other content from the CERN Open Data Portal does not, unless expressly stated in the applicable license conditions, transfer any intellectual property. Bulk downloading of email addresses taken from CERN Open Data Portal is not allowed.
  4. All content is provided “as is” and the user shall hold CERN and the content providers free and harmless in connection with its use of such content.
  5. CERN reserves the right, without notice, at its sole discretion and without liability, to restrict or remove user access where it considers that use of the CERN Open Data Portal interferes with its operations or violates these Terms of Use or applicable laws.
  6. These terms of Use are subject to change by CERN at any time and without notice, other than through posting the updated Terms of Use on the CERN Open Data Portal website.
If you have any questions or comments with respect to the CERN Open Data Portal, or if you are unsure whether your intended use is in line with these Terms of Use, or if you seek permission for a use that does not fall within these Terms of Use, please contact