| Acronym | Definition |
|---|
| SISA | Sony Interactive Studios America (est. 1995) |
| SISA | Stated Income, Stated Assets |
| SISA | Secure Information Sharing Architecture |
| SISA | Senior Information Systems Analyst |
| SISA | Società Italiana per lo Studio dell'Arteriosclerosi |
| SISA | School of Information Science for Africa |
| SISA | Signal-In-Space Accuracy |
| SISA | Semiconductor Industry Suppliers Association |
| SISA | Scottish Ice Skating Association |
| SISA | Southern Idaho Sailing Association |
| SISA | Simple Instruction Set Architecture |
| SISA | Science and Infrastructure Support Analysis |