Library services at Bar-Ilan University are provided via a network of libraries, which includes the main Wurzweiler library, and faculty, departmental and research institute libraries. The collections of publications found in these libraries reflect the topics studied and researched at the university, and include a particularly rich collection dealing with Judaism. All campus libraries are open to the university's students.

The university's computerized library catalog is known as "Barkat". It is a consolidated catalog which lists all the books found in the university's collections, as well as the Hebrew and foreign language periodicals and the books of the central library. The computerized catalog includes all the books acquired since 1983, as well many books from earlier years. Material that is not included in the computerized catalog may be located via a manual card catalog found at the central library.

Using the computerized catalog, which comprises a part of "Aleph", the national inter-university system, one may search through all the books at all the libraries, institutes and databases connected to this network.