| Acronym | Definition |
|---|
| CISSA | Committee of Intelligence and Security Services of Africa (African Union) |
| CISSA | Consorzio Intercomunale Servizi Socio Assistenziali |
| CISSA | Conference on Imaging Science Systems and Applications |
| CISSA | Computer Information Systems Student Association |
| CISSA | China International School Sports Association |
| CISSA | Centres d'Information et de Soins de Santé Ambulatoires (French: Mobile Information and Healthcare Centers) |
| CISSA | Cayman Islands Security Services Association |
| CISSA | Certificate In Systematic Skills Acquisition |