BASI
| Acronym | Definition |
|---|---|
| BASI | Bureau of Air Safety Investigation (Australia) |
| BASI | Basic Achievement Skills Inventory (achievement test; Pearson Education, Inc.) |
| BASI | British Association of Ski Instructors |
| BASI | Buoyant Aircraft Systems International (Canada) |
| BASI | Business and Social Initiatives (database) |
| BASI | Body Arts and Sciences International (est. 1989) |
| BASI | Business Advisory Services Inc. (Parramatta, Australia) |