The Carl von Ossietzky University Oldenburg encourages collaboration between private and public or publicly funded research and educational institutions that are important pillars for the university.

The following affiliated institutes are currently at the University of Oldenburg:

BKGE - Bundesinstitut für Kultur und Geschichte des östlichen Europa

ecco - ecology + communication Unternehmensberatung GmbH

GIZ gGmbH

Hörzentrum Oldenburg GmbH

IÖB - Institut für Ökonomische Bildung gGmbH

ISN - Institute for Science Networking GmbH

LTP - Laboratory for Thermophysical Properties GmbH

OFFIS - Institut für Informatik

Sirius Minds GmbH (formerly EFNW - Express Fonds Nordwest GmbH)