The Computer Society of Sri Lanka (CSSL) was established in 1976 for the purpose of promoting Information and Communication Technology (ICT) and professionalism among those engaged in this field, and of maintaining the highest professional standards among the Information and Communication Technology fraternity. It is a not-for-profit body.

The CSSL is considered the apex body for ICT professionals in Sri Lanka. Internationally it is recognised as a member of IFIP – International Federation for Information Processing. IFIP is the leading multinational, apolitical organization in Information & Communications Technologies and Sciences, which is recognized by the United Nations and other world bodies. The CSSL is also the Sri Lankan representative in the South East Asia Regional Computer Confederation (SEARCC) which is the forum of national Information Technology professional societies in the Asia Pacific region.