How to contact us

Find someone at CERN


  • For general enquiries speak to reception on +41 (0) 22 76 784 84 or +41 (0) 22 76 776  76 or send them an email.
  • Opening hours: Monday - Friday from 8am to 5.45pm, Saturday 8.30am to 5.15pm.
  • Reception is closed on CERN holidays, which include Easter and Christmas. If you want to visit during official French and Swiss holidays, it's better to phone beforehand to check if CERN is open.

Visits service

Press office

Postal addresses

As CERN is on the border between France and Switzerland it has two official postal addresses:

For Switzerland For France

1211 Geneva 23

Organisation Européenne pour la Recherche Nucléaire


  • Want to apply to a job at CERN? See the CERN jobs website for all information about CERN careers and the application process.

Service desk

  • For questions or technical problems about services related to CERN such as your CERN account, or internal administrative issues, please contact:
    CERN Service Desk, Building 55/2-001. Open 7.30am - 6.30pm on work days, Geneva time.
  • Raise a ticket through the Service Portal, send an email to, call them on +41 (0) 22 76 77777 or visit them.


  • Queries or issues with the CERN website? Contact the web team through the Service Portal.