| AIIS | Advantech Intelligent Inspection System 
| Others |
| AIIS | Ageamerican Institute For International Steel
| Others |
| AIIS | Alabama Insurance Information Service
| Others |
| AIIS | Albanian Institute for International Studies
| Others |
| AIIS | American Institute for International Steel
| Others |
| AIIS | American Institute of Indian Studies
| Others |
| AIIS | American Institute Of Intl Steel
| Others |
| AIIS | American Institute Of Iranian Studies
| Others |
| AIIS | Analogous Industrial Injuries Scheme
| Others |
| AIIS | Anterior Inferior Iliac Spine
| Others |