| CISS | Cambridge International Scholarship Scheme 
| Others |
| CISS | Campbell Interest and Skill Survey
| Others |
| CISS | Canadian International School System
| Others |
| CISS | Canadian International Student Services
| Others |
| CISS | Canadian Internetworked Scientific Supercomputer
| Others |
| CISS | Canadian ISBN Service System
| Others |
| CISS | Cancer Information and Support Services
| Others |
| CISS | Cast In Site Slab
| Others |
| CISS | Centaur Integrated Support Structure
| Others |
| CISS | Center for Information Systems Security
| Others |
| CISS | Center for Intelligence and Security Studies
| Others |
| CISS | Center for International Students and Scholars
| Others |
| CISS | Centre for International Security Studies
| Others |
| CISS | Centre for International Sports Studies
| Others |
| CISS | Certified information Security Specialist
| Others |
| CISS | Channel Islands Social Services
| Others |
| CISS | Characteristics Instrument for Screening Students
| Others |
| CISS | China International Student Service
| Others |
| CISS | China International Student System
| Others |
| CISS | Chiral Induced Spin Selectivity
| Others |
| CISS | Citizen Initiated State Statute
| Others |
| CISS | Collaboration Inspiration Support and Swiftness
| Others |
| CISS | Common Internet Scheme Syntax
| Others |
| CISS | Community Information Sharing System
| Others |
| CISS | Community Integrated Service System
| Others |
| CISS | Comparative Interdisciplinary Studies Section
| Others |
| CISS | Composite Indicator Of Systemic Stress
| Others |
| CISS | Comprehensive Import Supervision Scheme
| Others |
| CISS | Comprehensive Information Security Switzerland
| Others |
| CISS | Computed Images System & Services
| Others |
| CISS | Computer and Information Systems Security
| Others |
| CISS | Computer Info Sci Security
| Others |
| CISS | Computer Information Systems Security
| Others |
| CISS | Computer Information Systems Society
| Others |
| CISS | Computerized Inventory System Specialists
| Others |
| CISS | Concordia International School Shanghai
| Others |
| CISS | Conference on Information Sciences and Systems
| Others |
| CISS | Conference on Information Systems and Sciences
| Others |
| CISS | Configurable Integrated Surveillance System
| Others |
| CISS | Confirmation Interactive Site Server
| Others |
| CISS | Connected Industrial Sensor Solution
| Others |
| CISS | Connecticut Information Sharing System
| Others |
| CISS | Conseil International des Sciences Sociales
| Others |
| CISS | Consejo Internacional de Ciencias Sociales
| Others |
| CISS | Constructive Interference In Steady State
| Others |
| CISS | Constructive Interference Steady State
| Others |
| CISS | Consumer Injury Surveillance System
| Others |
| CISS | Continuous Ink Supply System
| Others |
| CISS | Continuous Ink Supply Systems
| Others |
| CISS | Convergence Insufficiency Symptom Survey
| Others |
| CISS | Convergence Insufficiency Symptoms Survey
| Others |
| CISS | Conversational Intelligence Summer School
| Others |
| CISS | Cooperative Integrated Safety Systems
| Others |
| CISS | Counselor Initiative and Student Support
| Others |
| CISS | Crash Impact Sound Sensor
| Others |
| CISS | Crash Investigation Sampling System
| Others |
| CISS | Critical Incident Support Services
| Others |
| CISS | Current Issues in Sport Science
| Others |
| CISS | Customer Information Support Specialist
| Others |
| CISS | International Social Science Council
| Others |