| IIAS | Indian Institute of Advanced Study 
| Others |
| IIAS | Indonesia International Auto Show
| Others |
| IIAS | Institut International des Sciences Administratives
| Others |
| IIAS | Institutional Investor Advisory Services
| Company |
| IIAS | International Institute for Advanced Studies
| Others |
| IIAS | International Institute for Archival Science
| Others |
| IIAS | International Institute for Asian Studies
| Others |
| IIAS | International Institute of Administrative Sciences
| Others |
| IIAS | International Internet Advertising Services
| Others |
| IIAS | International Internet Associate Symposium
| Others |
| IIAS | Internet In A Slice
| Others |
| IIAS | Inventory Information Approval System
| Others |
| IIAS | Inventory Information Approved System
| Others |
| IIAS | Israel Institute for Advanced Studies
| Others |