| Acronym | Definition |
|---|
| CAIS | Common APSE (Ada Programming Support Environment) Interface Set |
| CAIS | California Association of Independent Schools |
| CAIS | Canadian Agricultural Income Stabilization (Canada) |
| CAIS | Centro de Atendimento a Incidentes de Segurança (Portugese) |
| CAIS | Canadian Agricultural Income Stabilization Program (also seen as CAISP) |
| CAIS | Chinese-American International School (San Francisco, California) |
| CAIS | Circle of Ancient Iranian Studies (School of Oriental & African Studies) |
| CAIS | Complete Androgen Insensitivity Syndrome |
| CAIS | Canadian Association for Information Science (Edmonton, Alberta, Canada) |
| CAIS | Communications of the Association for Information Systems |
| CAIS | Centre for Australian Indigenous Studies (Monash University, Australia) |
| CAIS | Connecticut Association of Independent Schools (Mystic, Connecticut) |
| CAIS | Canadian Association for Irish Studies (Montreal, Canada) |
| CAIS | Centre for Advanced Information Systems |
| CAIS | Center for Applied Isotope Studies (University of Georgia, Athens, Georgia) |
| CAIS | Credit Account Information Sharing (Experian) |
| CAIS | Chemical Agent Identification Set |
| CAIS | Collaborative Asynchronous Inspection of Software |
| CAIS | Caribbean Agricultural Information Service |
| CAIS | Centre for Advanced Instrumentation Systems |
| CAIS | Common Airborne Instrumentation System |
| CAIS | Canadian Agricultural Income Support |
| CAIS | Círculo de Apoio à Integração Dos Sem-Abrigo (Portugal) |
| CAIS | Christian Alliance International School |
| CAIS | Certified Agricultural Irrigation Specialist |
| CAIS | Centre for Arab and Iranian Studies |
| CAIS | Cartilage Autograft Implantation System |
| CAIS | Center for American Intercultural Studies |
| CAIS | Comprehensive Airman Information System |
| CAIS | Comparative Anatomy Information System |
| CAIS | Canadian Association for Interoperable Systems |
| CAIS | Collocated Automatic Intercept System |
| CAIS | Concordia Administrative Information System (Lutheran Church Missouri Synod) |
| CAIS | Center for Advanced Intelligent Systems (Texas Tech University, Lubbock, Texas) |
| CAIS | Computer-Aided Instructional System |
| CAIS | Campus Advanced Information System (University of Nevada, Reno, Nevada) |
| CAIS | Central Assessment Information System |
| CAIS | Commercial Activities Inventory System |
| CAIS | Computer-Aided Integrated Systems Laboratory |
| CAIS | Communicative Arts and Integrative Studies |
| CAIS | Centre for Archive Information Studies |
| CAIS | Correctional Assessment and Intervention System |
| CAIS | Corporate Administrative Information System |
| CAIS | Computer-Aided Instrumentation Support System |
| CAIS | Central American Integration System (various nations) |