SIAA
| Acronym | Definition |
|---|---|
| SIAA | Simulation Industry Association of Australia (Lindfield, Australia) |
| SIAA | Scottish Independent Advocacy Alliance (Edinburgh, Scotland, UK) |
| SIAA | Strategic Independent Agents Alliance |
| SIAA | She is an Astronomer (International Year of Astronomy project) |
| SIAA | Societas Iuridica Antiliana et Arubana (Dutch) |
| SIAA | Seed Industry Association of Australia, Limited |
| SIAA | Science Industry Action Agenda (Australia) |