ICCS stands for:
- Institute of Communications and Computer Systems, Greece
- Intercollegiate Center for Classical Studies, Italy
- International Catholic Conference of Scouting
- International Coin Certification Service, Canada
- International Commission of Control and Supervision, United Nations
- International Commission on Civil Status, Europe
- International Council for Canadian Studies
- International Center for Cultural Studies USA
- International Close Combat Standards
- International Conference of Cognitive Science