The University of Warsaw Library's collection is one of the three largest collections of scholarly and scientific books in Poland. Library holdings  include (end of 2016):

 

- books: 2 097 914 vol.

- journals: 752 161 vol.

- special collections: 404 927 vol.

Thematic range of collection: universal, with a majority of works in the humanities and social sciences; rich retrospective collections in mathematics and natural sciences as well as in medicine and theology.

Collecting orientation: works from disciplines taught at the University of Warsaw.