| Acronym | Definition |
|---|
| INSA➣Institut National des Sciences Appliquées (French: National Institute of Applied Sciences) |
| INSA➣Indian National Science Academy |
| INSA➣Intelligence and National Security Alliance (Arlington, VA) |
| INSA➣Intersex Society of North America (est. 1993) |
| INSA➣Indian National Shipowners' Association |
| INSA➣Instituto Nacional de Saúde Ricardo Jorge (Portugal) |
| INSA➣International Shipowners' Association (Malaysia) |
| INSA➣Inland Northwest Ski Association (Spokane, WA) |
| INSA➣Indonesian National Shipowner's Association (Jakarta, Indonesia) |
| INSA➣Inland Navigation Systems Analysis (USACE) |