General Sir John Kotelawala Defence University Library is an integral part of the professional development of all its users, and it supports the vision and mission of the university. The prime role of the library is to provide a suitable environment and to facilitate a variety of resources in multiple formats which enhance teaching, learning and research activities of the university.
The Main library caters to over 3000 readers, including both students and the staff of the university. It provides library clients with quality services and access to information, in a learning environment which provides equitable access to the library services for all clients.
The Main Library possesses a collection covering a vast area of knowledge in Engineering, Physics, Chemistry, Economics, Management, Law, Geography and History. At present, the library collection encompasses over 23700 books pertaining to various subject disciplines and organized various collections such as Lending and Reference Collection, Periodical Collection, Newspapers Collection, Sri Lanka Collection and Audio Visual Collection. Further, the library provides electronic access to full-text databases to facilitate research activities of the university.