The NIBM Library & Documentation Centre is a source of information. It plays a vital role in catering to the information and educational needs of both course participants and professional staff of NIBM. The fully-fledged Library & Documentation Centre is well stocked with over 23000 Books, over 400 CD ROM's, educational video tapes, and selected periodicals. Among the library's special collections are the Asian Productivity Organization (APO) publication, Training Manuals, Company Annual Reports, Periodicals Holdings, Socio-Economic statistics, NIBM Consultancy and student project reports and the Sri Lanka Collection.

The classification System used by the Library is the Universal Decimal Classification. In April 1990, it commenced using the computer-based bibliographical information system, Micro CDS/ISIS software package, introduced by UNESCO.

Services provided by the NIBM Library include inquiry, reference & Lending services, library information services using the library database, inter-library loan facility, photocopying facility, journal contents page service and bibliographical assistance to the Professional staff and executive staff of NIBM, Students and participants of courses.

The Library is available for course participants for reference purposes. Participants in Diploma Programmes and certificate courses are allowed the facility of borrowing books on payment of a refundable deposit.

The NIBM Library & Documentation Centrex is open seven days a week from 0800 hrs to 1600 hrs, except on pubic holidays.