The LST Library holds over 8500 books and is a repository for rare legal literature as well as contemporary archival material.

The LST Library also contains over 60 titles of Sri Lankan and International Journals, including bulletins and newsletters that are relevant to existing research programmes. The Library's special collections include the Sam Kadirgamar collection, which was acquired in 1991, and consists of a substantial number of legal texts, including Indian, English, South African and Sri Lankan Law Reports as well as a number of key texts on several aspects of the law.