| Acronym | Definition |
|---|
| AISI | American Iron and Steel Institute |
| AISI | African Information Society Initiative |
| AISI | Alberta Initiative for School Improvement (Canada) |
| AISI | As I See It |
| AISI | Asosiasi Industri Sepeda Motor Indonesia (Indonesian: Indonesian Motorcycle Industries Association; Jakarta, Indonesia) |
| AISI | Assault, Inflicting Serious Injury (criminal law) |
| AISI | American International Supply, Inc (Oakland, CA) |
| AISI | Airborne Instrumentation Subsystem - Internal |
| AISI | Airborne Instrumentation System - Internal |
| AISI | Automatic Integrated Survey Instrument |
| AISI | Associazione Industrie Software Interattivo |
| AISI | Army Information System Integration (US Army) |
| AISI | Aaltamira Investment Services, Inc. (Canada) |