The Computer Society of India is the first and the largest body of computer professionals in India. It was started on 6th March 1965 by a handful of computer professionals and has now grown to be the national body representing computer professionals. Its membership stands at more than 50,000 in more than 60 chapters throughout India.

The Computer Society of India is a non-Profit professional meet to exchange views and information learn and share ideas. The wide spectrum of members is committed to the advancement of the theory and practice of Computer Engineering and Technology Systems, Science and Engineering, Information Processing and related Arts and Sciences. The Society also encourages and assists professionals to maintain the integrity and competence of the profession and fosters a sense of partnership amongst members. Besides the activities held at the Chapters and Student Branches, the Society also conducts periodic conferences, seminars, etc. Through the initiatives of Prof. Narasimhan, the first President, CSI has been in close liaison with IFIP since its inception in 1965, when observers from India attended the IFIP Council meeting. Since 1974, when CSI became a member of IFIP, CSI has organized many IFIP-sponsored events and was host to the 1978 Council meeting in Bombay and the 1988 General Assembly in New Delhi. It represents India in IFIP-International Federation of Information Processing Represents in technical Committees and working groups of IFIP. CSI also organises IFIP sponsored conferences.

The Society functions under the guidance of an Executive Committee. The members of this Committee are elected by the voting members of the Society. The functional head of the Society is the President and is assisted by the Vice President, Secretary and Treasurer. The other members of the Execom are the Regional Vice Presidents of Eight Regions and Divisional Chairpersons of Five Divisions viz. Division-I (Hardware), Division-II (Software), Division-III (Scientific Applications), Division-IV (Communications) and Division-V (Education & Research). Apart from the above the Immediate Past President continues to be associated with the Execom. An elected Nominations Committee of three members conducts the annual elections.

The Society is targeted at the IT professionals and also user community at large. Hence the membership of the Society is open to all professionals involved in the field of information technology. The membership categories include Individual and Institutional. In the Individual member category there are five grades namely Fellow, Senior, Member, Associate and Student, whereas Institutional membership includes organisations and educational institutions. A professional can also apply for life membership in the Society.