| Acronym | Definition |
|---|
| CISAS | Centro de Informacion y Servicios de Asesoria en Salud (Spanish: Center for Information and Advisory Services in Health; Nicaragua) |
| CISAS | Communications and Internet Services Adjudication Scheme (London, England, UK) |
| CISAS | Centro Interdipartimentale di Studi e Attivita Spaziali (Italian: Interdepartmental Center for Space Studies and Activities) |
| CISAS | Channel Islands Splits Adjudication Scheme (Split Capital Investment Trust settlement agreement) |
| CISAS | Canadian Institute on Student Affairs and Services (est. 1995) |