C3L learning system C3LLO     


Please enter your login and username.

  CAS login*

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For technical support, please contact the C3L-Support-Team: c3l-support@uni-oldenburg.de.

You may also reach us by phone from Monday - Friday during regular business hours: +49(0)441 798-4517.


* Central Authentication Service for the Carl von Ossietzky University of Oldenburg. You may use this link to sign in with Your user credentials issued by the University provided that You

  • have valid user credentials issued by C.v.O University Oldenburg;
  • entered the CAS username in Your account settings.

C3LLO Mobile-Apps

You can download the C3LLO app for Android and iOS (free) following the links below.

Technical requirements / notes