Universität Bonn

University and State Library

Bonn University and State Library

The bonnus search portal

Search in bonnus

Main Library

Opening times
Mon. - Sun.: 8 a.m. to midnight
Borrowing and returning items
Mon. - Sun.: 09 a.m. to 11 p.m.

MNL Branch Library

Opening times
Mon. - Sun.: 8 a.m. to midnight
Borrowing and returning items
Mon. - Sun.: 09 a.m. to 11 p.m.

Information

Mon. - Fri.: 9 a.m. to 5 p.m.
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
Bonn USL Services for Summer Semester 2026
Short introductions for the start of the semester, among other services
April 1st, 2026: Service restrictions due to server maintenance
Possible delays in borrowing, magazine and interlibrary loan orders, and service PCs
USL closed for Easter
USL closed from April 3rd through April 6th
Effective March 1st, 2026: New service hours at Bonn USL
Starting in March 2026, borrowing, returns, and information services will be available daily from 9:00 a.m.
Current events
Short introduction: How to use the MNL Branch Library
MNL Branch Library
11:00 AM - 11:45 AM
Just starting out in your studies or not set foot in the library yet? You would like to get to know the new bonnus search portal? We regularly run brief ...
Short introduction: How to use the Main Library
Main Library
01:00 PM - 01:45 PM
Just starting out in your studies or not set foot in the library yet? We'll show you how to borrow a book and how to find your way around the library.

Contacts & bank details

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.


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.


Further services and projects

DSC00032 - Medienzentrum PCs.jpg
© Sebastian Weule / ULB Bonn

Media Center in the MNL Branch Library

The Media Center in the MNL Branch Library offers PC workstations, equipment loans and training sessions and serves as a one-stop shop for all the University of Bonn’s media offerings.

books
© 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.

Logo
© 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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