The Sri Lanka Library Association (SLLA) was incorporated by Law No.20 of 1974 of the National State Assembly and amended by act. no. 7 of 2004. The SLLA is a founding and executive member of the Organisation of Professional Associations (OPA) of Sri Lanka. It holds membership of the Regional Federation of South Asian Library Associations (REFSALA), Commonwealth Library Association (COMLA) and the International Federation of Library Associations (IFLA). SLLA President is the current chair person of REFSALA.
Professional qualifications and training obtained through the SLLA are recognised by the Government of Sri Lanka as the basic requirements for entry to careers in library and information science. As SLLA is the only professional body representing all library professionals in Sri Lanka, its professional courses are accepted on par with those of leading international professional associations.