| Acronym | Definition |
|---|
| CISS | Continuous Ink Supply System |
| CISS | Input Capacitance |
| CISS | Common Internet Scheme Syntax |
| CISS | Confirmation Interactive Site Server |
| CISS | Collectif Interassociatif sur la Santé (French: Inter-Association Collective on Health) |
| CISS | College of International and Security Studies (George C. Marshall European Center for Security Studies) |
| CISS | Campbell Interest and Skill Survey (Pearson Assessments) |
| CISS | Cooperazione Internazionale Sud-sud (Italian) |
| CISS | Center for Intelligence and Security Studies (University of Mississippi) |
| CISS | Canadian Institute of Strategic Studies |
| CISS | Comité International des Sports des Sourds (International Committee of Sports for the Deaf) |
| CISS | Cisco Information Security Specialist (computing) |
| CISS | Conference on Information Science and Systems |
| CISS | Cryptology & Information Security Series |
| CISS | Community Integrated Service Systems |
| CISS | Center for Information Systems Security (DISA) |
| CISS | Canadian Internetworked Scientific Supercomputer |
| CISS | Cast-in-Steel-Shell (engineering) |
| CISS | Conseil International des Sciences Sociales (French) |
| CISS | Comprehensive Import Supervision Scheme (Nigeria) |
| CISS | Container Identification Scratch System |
| CISS | Cold-Induced Sweating Syndrome |
| CISS | Chief Integrated Support Services (DPKO) |
| CISS | Centaur Integrated Support Structure |
| CISS | Constructive Interference Steady State |
| CISS | Configurable Integrated Surveillance System (Rockwell Collins) |
| CISS | Call Independent Supplementary Service |
| CISS | Common Integration Site (cancer molecular tag) |
| CISS | Central Indiana Soaring Society (aviation) |
| CISS | Channel Islands Specialists' Society |
| CISS | Computational Intelligence in Services Sciences |
| CISS | Cassini Imaging Science Subsystem |
| CISS | Contractor Integrated Security Suite |
| CISS | Corporate Information Systems Security |
| CISS | Cadet Inter Services Skill at Arms Meeting (UK Air Cadets) |
| CISS | Certified Industrial Safety Specialist |
| CISS | Committee International Silent Sports |
| CISS | Customer Implementation and Support Services (Sprint) |