The Kooperativer Bibliotheksverbund Berlin-Brandenburg (KOBV) is the network of all university libraries, all public libraries and numerous research, special and government libraries in the federal states of Berlin and Brandenburg. Responsible bodies for the network are the Berlin Senate Office – Cultural Affairs, the Brandenburg Ministry of Science, Research and Culture and the participating libraries. The KOBV was founded from 1997-2000 and institutionalized in 2001.

The aim of KOBV is to extend the information infrastructure of libraries in the region and to develop new services for library users. The central entity of the network is the KOBV-Zentrale located at Zuse Institute Berlin. Apart from the technical operation of the network services and the consulting of the participating libraries, the KOBV Zentrale also conducts research and development projects. KOBV is cooperating with the Friedrich-Althoff-Konsortium e.V. (FAK) and the Servicecenter Digitization Berlin (digiS), also located at ZIB.

The basic principles of the KOBV are:
- a decentralized, networked and learning form of organisation
- integration of heterogeneous technical systems into the library network
- promotion of innovation at KOBV member libraries
- continuous advancement of the KOBV concept
- co-operation on national and international level and
- an open communication culture