IIIS
| Acronym | Definition |
|---|---|
| IIIS | International Institute of Informatics and Systemics |
| IIIS | Institute for International Integration Studies (University of Ireland; Dublin, Ireland) |
| IIIS | Institute for Integrated and Intelligent Systems (Griffith University; Australia) |
| IIIS | Institutional Investor Information Service (est. 1995; Australia) |