| Acronym | Definition |
|---|
| IHW➣International Halley Watch |
| IHW➣International Histocompatibility Workshop (immunology) |
| IHW➣International Herpesvirus Workshop |
| IHW➣Indigenous Health Worker (Australia) |
| IHW➣International Hardware Week |
| IHW➣International Housekeepers Week |
| IHW➣Internet Health Watch |