Universität Bonn

University and State Library

Bonn University and State Library

The bonnus search portal

Main Library

Opening times
Mon. - Fri.: 8 am to 10 pm
Sat. + Sun.: 8 am to 8 pm
Borrowing and returning items
Mon. - Fri.: 10 am to 10 pm
Sat. + Sun.: 10 am to 8 pm

MNL Branch Library

Opening times
Mon. - Fri.: 8 am to 10 pm
Sat. + Sun.: 8 am to 8 pm
Borrowing and returning items
Mon. - Fri.: 10 am to 10 pm
Sat. + Sun.: 10 am to 8 pm


Mon. - Fri.: 10 am to 5 pm
HB: information@ulb.uni-bonn.de
HB Tel.: +49 228 73-7525
MNL: benutzungmnl@ulb.uni-bonn.de
MNL Tel.: +49 228 73-3405
Latest News
USL closed at Easter

Closed from 07 to 10 April

New Website of the Open Access Service Center

Web relaunch on 03/01/2023

New bicycle racks at the main library

84 more bicycle racks

Current events
Short introduction: How to use the MNL Branch Library (on-site)
MNL Branch Library
01:00 - 01:20
Just starting out in your studies or not set foot in the library yet? We regularly run brief introductions to using the library at the start of every semester.
Open Access made easy
Online via Zoom
12:30 - 12:45
Institutional publishing agreements at the University of Bonn You as an author are often faced with very high fees for individual publications. With this in ...
What do they want from me?
Online via Zoom
12:30 - 12:45
Research Data Management requirements from third-party funders Most international funding organisations (research councils, trusts and funds) have ...
Publishing your book in Open Access?
Online via Zoom
12:30 - 12:45
Here's what to consider! Open access has developed into a highly dynamic field in the area of book publications in recent years. As the publication ...


Information on the USL’s organizational structure, including all its divisions, details of who is responsible for what, and an overview of contacts from A to Z.

Current projects

© Volker Lannert / Universität Bonn

New Alma library system

In August 2022, the USL is beginning its switch to a new library management system, which is set to go live in September 2023.

© ULB Bonn

NS-Raubgut project

The project is designed to produce the first-ever systematic review of the USL’s old holdings focusing specifically on books seized as a result of Nazi persecution and is the largest undertaking of its kind currently underway in Bonn.

Historical newspapers
© ULB Bonn

Digitization of historical newspapers in NRW

The government of North Rhine-Westphalia has been funding a state-wide project to digitize its historical newspapers since 2017.

For researchers from the University of Bonn

Research data management

The Research Data Service Center can assist you with all aspects of research data management, from planning and proposing research projects to publishing and archiving your research data.

Open Access Service Center

The service center provides you with comprehensive support, from details of current funding opportunities through to advice and information on choosing the right license.

bonndoc—the University of Bonn’s publication server

Academic works from the University can be published electronically on bonndoc.

Specialist advice

The team of subject librarians can give you wide-ranging specialist advice on things like literature searches, reference management and requesting the purchase of new items.

Did you know...?

© BonnerBibliotheken

The BonnerBibliotheken partnership

This lets you run simultaneous searches in the catalogs of public libraries based in Bonn and the surrounding area.

Logo Sammlungen
© Thomas Häpp / ULB Bonn

Cultural heritage in the USL

If you have any questions about the items we hold, would like to do some research in our collections, are interested in historical and cultural studies in the Rhineland region or want to deposit your publication with us as an obligatory copy, our website is just the right place for you.

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