The Central Library in the second floor of the six-storied Srinivasa Ramanujan Centre is named after the teacher of teachers, Dr. S.Radhakrishnan. Ithas a collection of 29,090 print books and over 1,85,757 e-books covering various subjects like Engineering and Technology, Arts Science, Humanities, Management etc.,

The library subscribes to online journal databases like Science Direct, IEEE, ACM, ASME, ASCE, Springer Journals , American Chemical Society , Nature Journal, Institute of Physics, ProQuestOne Academic, IET Digital Library ASTM-SEDL, EBSCO-BSP, ABI/INFORM-Complete, Oxford University Press etc., proving full text access to around to 22,950 journals.

Annual subscription to bibliographic databases like Web of Sciences providing access to over 16,400 titles is also available. SASTRA is also an associate member of the e-SHODH SINDHU, which provides access to online resources. Online access for all the e-books and e-journals has facilitated on campus users to access the huge collection from the comfort of their rooms and at their convenience.